MATH IN OUR WORLD (LOOSELEAF)-W/ACCESS
3rd Edition
ISBN: 9781259969690
Author: sobecki
Publisher: MCG
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Textbook Question
Chapter 2.4, Problem 18E
The marketing research firm of OUWant12 designed and sent three spam advertisements to 40 e-mail accounts. The first one was an ad for hair removal cream, the second was an ad for Botox treatments, and the third was an ad for a new all lima bean diet. Explain why, when the following results occurred, the sponsors discontinued their services.
23 recipients deleted the ad for hair removal cream without looking at it.
18 recipients deleted the ad for Botox treatments.
19 recipients deleted the ad for the all lima bean diet.
12 recipients deleted the ads for hair removal cream and Botox treatments.
6 recipients deleted the ads for Botox treatments and the all lima bean diet.
7 recipients deleted the ads for the hair removal cream and the all lima bean diet.
2 recipients deleted all three ads.
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Chapter 2 Solutions
MATH IN OUR WORLD (LOOSELEAF)-W/ACCESS
Ch. 2.1 - Write the set of months that end with the letter...Ch. 2.1 - Write each set, using the roster method. (a) The...Ch. 2.1 - Decide whether each statement is true or false....Ch. 2.1 - Prob. 4TTOCh. 2.1 - Use set-builder notation to designate each set,...Ch. 2.1 - Prob. 6TTOCh. 2.1 - Using the roster method, write the set of odd...Ch. 2.1 - Prob. 8TTOCh. 2.1 - Find the cardinal number of each set. (a) A = {z,...Ch. 2.1 - Prob. 10TTO
Ch. 2.1 - Prob. 11TTOCh. 2.1 - Show that the sets {North, South, East, West} and...Ch. 2.1 - Prob. 1ECh. 2.1 - Prob. 2ECh. 2.1 - Prob. 3ECh. 2.1 - List and describe three ways to write sets.Ch. 2.1 - Prob. 5ECh. 2.1 - Prob. 6ECh. 2.1 - Prob. 7ECh. 2.1 - Define the empty set and give two examples of an...Ch. 2.1 - Prob. 9ECh. 2.1 - For Exercises 922. write each set using the roster...Ch. 2.1 - For Exercises 922. write each set using the roster...Ch. 2.1 - For Exercises 922, write each set using the roster...Ch. 2.1 - For Exercises 922. write each set using the roster...Ch. 2.1 - Prob. 14ECh. 2.1 - Prob. 15ECh. 2.1 - For Exercises 922. write each set using the roster...Ch. 2.1 - Prob. 17ECh. 2.1 - For Exercises 922. write each set using the roster...Ch. 2.1 - Prob. 19ECh. 2.1 - Prob. 20ECh. 2.1 - Prob. 21ECh. 2.1 - Prob. 22ECh. 2.1 - For Exercises 2328, decide if the statement is...Ch. 2.1 - Prob. 24ECh. 2.1 - For Exercises 2328, decide if the statement is...Ch. 2.1 - Prob. 26ECh. 2.1 - Prob. 27ECh. 2.1 - Prob. 28ECh. 2.1 - For Exercises 2936, write each set, using the...Ch. 2.1 - For Exercises 2936, write each set, using the...Ch. 2.1 - For Exercises 2936, write each set, using the...Ch. 2.1 - For Exercises 2936, write each set, using the...Ch. 2.1 - Prob. 33ECh. 2.1 - Prob. 34ECh. 2.1 - Prob. 35ECh. 2.1 - Prob. 36ECh. 2.1 - Prob. 37ECh. 2.1 - Prob. 38ECh. 2.1 - Prob. 39ECh. 2.1 - Prob. 40ECh. 2.1 - Prob. 41ECh. 2.1 - Prob. 42ECh. 2.1 - For Exercises 4348, list the elements in each set....Ch. 2.1 - For Exercises 4348, list the elements in each set....Ch. 2.1 - For Exercises 4348, list the elements in each set....Ch. 2.1 - For Exercises 4348, list the elements in each set....Ch. 2.1 - Prob. 47ECh. 2.1 - Prob. 48ECh. 2.1 - Prob. 49ECh. 2.1 - For Exercises 4954, state whether each collection...Ch. 2.1 - Prob. 51ECh. 2.1 - Prob. 52ECh. 2.1 - Prob. 53ECh. 2.1 - Prob. 54ECh. 2.1 - Prob. 55ECh. 2.1 - Prob. 56ECh. 2.1 - Prob. 57ECh. 2.1 - Prob. 58ECh. 2.1 - Prob. 59ECh. 2.1 - Prob. 60ECh. 2.1 - Prob. 61ECh. 2.1 - Prob. 62ECh. 2.1 - For Exercises 6168, state whether each set is...Ch. 2.1 - For Exercises 6168, state whether each set is...Ch. 2.1 - Prob. 65ECh. 2.1 - Prob. 66ECh. 2.1 - Prob. 67ECh. 2.1 - For Exercises 6168, state whether each set is...Ch. 2.1 - For Exercises 6974, state whether each pair of...Ch. 2.1 - For Exercises 6974, state whether each pair of...Ch. 2.1 - Prob. 71ECh. 2.1 - For Exercises 6974, state whether each pair of...Ch. 2.1 - Prob. 73ECh. 2.1 - For Exercises 6974, state whether each pair of...Ch. 2.1 - For Exercises 7578, show that each pair of sets is...Ch. 2.1 - Prob. 76ECh. 2.1 - Prob. 77ECh. 2.1 - Prob. 78ECh. 2.1 - For Exercises 7986, find the cardinal number for...Ch. 2.1 - Prob. 80ECh. 2.1 - Prob. 81ECh. 2.1 - Prob. 82ECh. 2.1 - Prob. 83ECh. 2.1 - For Exercises 7986, find the cardinal number for...Ch. 2.1 - For Exercises 7986, find the cardinal number for...Ch. 2.1 - Prob. 86ECh. 2.1 - For Exercises 8792, determine whether each...Ch. 2.1 - For Exercises 8792, determine whether each...Ch. 2.1 - Prob. 89ECh. 2.1 - Prob. 90ECh. 2.1 - Prob. 91ECh. 2.1 - Prob. 92ECh. 2.1 - Prob. 93ECh. 2.1 - Prob. 94ECh. 2.1 - Excessive alcohol consumption by those aged 1824...Ch. 2.1 - Prob. 96ECh. 2.1 - Prob. 97ECh. 2.1 - 98. The rise of digital distribution for music has...Ch. 2.1 - Prob. 99ECh. 2.1 - Prob. 100ECh. 2.1 - Is {0} equivalent to ? Explain your answer.Ch. 2.1 - Write two sets that are equivalent but not equal....Ch. 2.1 - Prob. 103ECh. 2.1 - (a) List all of the different sets you can form...Ch. 2.1 - Prob. 105ECh. 2.1 - Prob. 106ECh. 2.2 - Try This One 1
Let U = {10, 20, 30, 40, 50, 60,...Ch. 2.2 - Find all subsets of B = {Verizon, T-Mobile, ATT}.Ch. 2.2 - Prob. 3TTOCh. 2.2 - Decide if each statement is true or false. (a) {8}...Ch. 2.2 - Prob. 5TTOCh. 2.2 - If A = {Cleveland, Indianapolis, Chicago, Des...Ch. 2.2 - Prob. 7TTOCh. 2.2 - Prob. 8TTOCh. 2.2 - Prob. 9TTOCh. 2.2 - Prob. 10TTOCh. 2.2 - What is a subset?Ch. 2.2 - Explain the difference between a subset and a...Ch. 2.2 - Prob. 3ECh. 2.2 - Prob. 4ECh. 2.2 - Prob. 5ECh. 2.2 - Prob. 6ECh. 2.2 - Prob. 7ECh. 2.2 - Prob. 8ECh. 2.2 - Write an example from real life that represents...Ch. 2.2 - Write an example from real life that represents...Ch. 2.2 - For Exercises 1114, let U = {2, 3, 5, 7, 11, 13,...Ch. 2.2 - For Exercises 1114, let U = {2, 3, 5, 7, 11, 13,...Ch. 2.2 - Prob. 13ECh. 2.2 - Prob. 14ECh. 2.2 - If U = the set of natural numbers and A = {4, 6,...Ch. 2.2 - Prob. 16ECh. 2.2 - Prob. 17ECh. 2.2 - Prob. 18ECh. 2.2 - Prob. 19ECh. 2.2 - Prob. 20ECh. 2.2 - Prob. 21ECh. 2.2 - Prob. 22ECh. 2.2 - Prob. 23ECh. 2.2 - Prob. 24ECh. 2.2 - For Exercises 2534, state whether each is true or...Ch. 2.2 - Prob. 26ECh. 2.2 - For Exercises 2534, state whether each is true or...Ch. 2.2 - Prob. 28ECh. 2.2 - Prob. 29ECh. 2.2 - For Exercises 2534, state whether each is true or...Ch. 2.2 - Prob. 31ECh. 2.2 - Prob. 32ECh. 2.2 - Prob. 33ECh. 2.2 - For Exercises 2534, state whether each is true or...Ch. 2.2 - Prob. 35ECh. 2.2 - Prob. 36ECh. 2.2 - Prob. 37ECh. 2.2 - Prob. 38ECh. 2.2 - Prob. 39ECh. 2.2 - Prob. 40ECh. 2.2 - Prob. 41ECh. 2.2 - Prob. 42ECh. 2.2 - Prob. 43ECh. 2.2 - Prob. 44ECh. 2.2 - Prob. 45ECh. 2.2 - Prob. 46ECh. 2.2 - Prob. 47ECh. 2.2 - Prob. 48ECh. 2.2 - Prob. 49ECh. 2.2 - Prob. 50ECh. 2.2 - Prob. 51ECh. 2.2 - Prob. 52ECh. 2.2 - Prob. 53ECh. 2.2 - For Exercises 5160, let U = {11, 12, 13, 14, 15,...Ch. 2.2 - Prob. 55ECh. 2.2 - Prob. 56ECh. 2.2 - Prob. 57ECh. 2.2 - Prob. 58ECh. 2.2 - Prob. 59ECh. 2.2 - For Exercises 5160, let U = {11, 12, 13, 14, 15,...Ch. 2.2 - Prob. 61ECh. 2.2 - Prob. 62ECh. 2.2 - Prob. 63ECh. 2.2 - For Exercises 6170, let U = {x | x N and x 25} W...Ch. 2.2 - Prob. 65ECh. 2.2 - Prob. 66ECh. 2.2 - Prob. 67ECh. 2.2 - Prob. 68ECh. 2.2 - For Exercises 6170, let U = {x | x N and x 25} W...Ch. 2.2 - Prob. 70ECh. 2.2 - Prob. 71ECh. 2.2 - Prob. 72ECh. 2.2 - Prob. 73ECh. 2.2 - Prob. 74ECh. 2.2 - Prob. 75ECh. 2.2 - Prob. 76ECh. 2.2 - Prob. 77ECh. 2.2 - Prob. 78ECh. 2.2 - Prob. 79ECh. 2.2 - Prob. 80ECh. 2.2 - Prob. 81ECh. 2.2 - Prob. 82ECh. 2.2 - For Exercises 8184, let D = {11, 12, 13, 14, 15,}...Ch. 2.2 - For Exercises 8184, let D = {11, 12, 13, 14, 15,}...Ch. 2.2 - Prob. 85ECh. 2.2 - Prob. 86ECh. 2.2 - Prob. 87ECh. 2.2 - Prob. 88ECh. 2.2 - Prob. 89ECh. 2.2 - Prob. 90ECh. 2.2 - Prob. 91ECh. 2.2 - Prob. 92ECh. 2.2 - Prob. 93ECh. 2.2 - To integrate aerobics into her exercise program,...Ch. 2.2 - Prob. 95ECh. 2.2 - Prob. 96ECh. 2.2 - Prob. 97ECh. 2.2 - Prob. 98ECh. 2.2 - Prob. 99ECh. 2.2 - Prob. 100ECh. 2.2 - Prob. 101ECh. 2.2 - Prob. 102ECh. 2.2 - Prob. 103ECh. 2.2 - Prob. 104ECh. 2.2 - Prob. 105ECh. 2.2 - Prob. 106ECh. 2.2 - Prob. 107ECh. 2.2 - Prob. 108ECh. 2.2 - Prob. 109ECh. 2.2 - Prob. 110ECh. 2.2 - Prob. 111ECh. 2.3 - Prob. 1TTOCh. 2.3 - Prob. 2TTOCh. 2.3 - Prob. 3TTOCh. 2.3 - Prob. 4TTOCh. 2.3 - Prob. 5TTOCh. 2.3 - Prob. 6TTOCh. 2.3 - Use Venn diagrams to show that (A B) = A B.Ch. 2.3 - Prob. 8TTOCh. 2.3 - Prob. 9TTOCh. 2.3 - Prob. 10TTOCh. 2.3 - Prob. 2ECh. 2.3 - Prob. 3ECh. 2.3 - Prob. 4ECh. 2.3 - Describe in your own words what De Morgans laws...Ch. 2.3 - Prob. 6ECh. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - Prob. 9ECh. 2.3 - Prob. 10ECh. 2.3 - Prob. 11ECh. 2.3 - Prob. 12ECh. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - Prob. 14ECh. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - Prob. 16ECh. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - Prob. 21ECh. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - Prob. 24ECh. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - For Exercises 730, draw a Venn diagram and shade...Ch. 2.3 - Prob. 31ECh. 2.3 - Prob. 32ECh. 2.3 - Prob. 33ECh. 2.3 - Prob. 34ECh. 2.3 - Prob. 35ECh. 2.3 - Prob. 36ECh. 2.3 - Prob. 37ECh. 2.3 - Prob. 38ECh. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - Prob. 41ECh. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - Prob. 45ECh. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 3950, use the following Venn diagram...Ch. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - Prob. 57ECh. 2.3 - Prob. 58ECh. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - For Exercises 5160, use the following information:...Ch. 2.3 - Prob. 61ECh. 2.3 - Prob. 62ECh. 2.3 - Prob. 63ECh. 2.3 - Prob. 64ECh. 2.3 - Prob. 65ECh. 2.3 - Prob. 66ECh. 2.3 - Prob. 67ECh. 2.3 - Prob. 68ECh. 2.3 - Prob. 69ECh. 2.3 - Prob. 70ECh. 2.3 - Prob. 71ECh. 2.3 - Prob. 72ECh. 2.3 - Prob. 73ECh. 2.3 - In Exercises 7376, G = {people who regularly use...Ch. 2.3 - Prob. 75ECh. 2.3 - Prob. 76ECh. 2.3 - Prob. 77ECh. 2.3 - Prob. 78ECh. 2.3 - Prob. 79ECh. 2.3 - Prob. 80ECh. 2.3 - Prob. 81ECh. 2.3 - Prob. 82ECh. 2.3 - Prob. 83ECh. 2.3 - Prob. 84ECh. 2.3 - Prob. 85ECh. 2.3 - Prob. 86ECh. 2.3 - Prob. 87ECh. 2.3 - In Exercises 8792. (a) use a Venn diagram to show...Ch. 2.3 - Prob. 89ECh. 2.3 - In Exercises 8792. (a) use a Venn diagram to show...Ch. 2.3 - In Exercises 8792. (a) use a Venn diagram to show...Ch. 2.3 - In Exercises 8792. (a) use a Venn diagram to show...Ch. 2.4 - In an average year, Columbus, Ohio, has 163 days...Ch. 2.4 - According to an online survey on...Ch. 2.4 - An online music service surveyed 500 customers and...Ch. 2.4 - Three other risk factors are obesity, family...Ch. 2.4 - Prob. 1ECh. 2.4 - In a class of 25 students, 18 were math majors, 12...Ch. 2.4 - A court record search of 250 incoming freshmen at...Ch. 2.4 - Twenty-five mice were involved in a biology...Ch. 2.4 - Out of 20 students taking a midterm psychology...Ch. 2.4 - In a study of 400 entres served at 75 campus...Ch. 2.4 - The financial aid department at a college surveyed...Ch. 2.4 - The manager of a campus gym is planning the...Ch. 2.4 - One semester in a chemistry class, 14 students...Ch. 2.4 - According to a survey conducted by the National...Ch. 2.4 - Two hundred patients suffering from depression...Ch. 2.4 - A survey of 96 students on campus showed that 29...Ch. 2.4 - Of the 50 largest cities in the United States, 11...Ch. 2.4 - One hundred new books are released nationally over...Ch. 2.4 - A marketing firm is hired to conduct research into...Ch. 2.4 - The arts communities in 230 cities across the...Ch. 2.4 - A researcher was hired to examine the drinking...Ch. 2.4 - The marketing research firm of OUWant12 designed...Ch. 2.4 - Prob. 19ECh. 2.4 - Prob. 20ECh. 2.5 - Show that the set {1, 2, 3, 4, 5, } is an infinite...Ch. 2.5 - Prob. 2TTOCh. 2.5 - Prob. 3TTOCh. 2.5 - Prob. 1ECh. 2.5 - Prob. 2ECh. 2.5 - Prob. 3ECh. 2.5 - Prob. 4ECh. 2.5 - Prob. 5ECh. 2.5 - Prob. 6ECh. 2.5 - Prob. 7ECh. 2.5 - Prob. 8ECh. 2.5 - Prob. 9ECh. 2.5 - For Exercises 520, find a general term for the...Ch. 2.5 - Prob. 11ECh. 2.5 - Prob. 12ECh. 2.5 - Prob. 13ECh. 2.5 - Prob. 14ECh. 2.5 - For Exercises 520, find a general term for the...Ch. 2.5 - Prob. 16ECh. 2.5 - Prob. 17ECh. 2.5 - Prob. 18ECh. 2.5 - Prob. 19ECh. 2.5 - Prob. 20ECh. 2.5 - Prob. 21ECh. 2.5 - Prob. 22ECh. 2.5 - Prob. 23ECh. 2.5 - Prob. 24ECh. 2.5 - Prob. 25ECh. 2.5 - Prob. 26ECh. 2.5 - Prob. 27ECh. 2.5 - Prob. 28ECh. 2.5 - Prob. 29ECh. 2.5 - Prob. 30ECh. 2.5 - Prob. 31ECh. 2.5 - Prob. 32ECh. 2.5 - For Exercises 3134, show that the given set is...Ch. 2.5 - Prob. 34ECh. 2.5 - Prob. 35ECh. 2.5 - Prob. 36ECh. 2.5 - Prob. 37ECh. 2.5 - Prob. 38ECh. 2.5 - Prob. 39ECh. 2.5 - (a) Define a one-to-one correspondence between the...Ch. 2.5 - Prob. 41ECh. 2.5 - Prob. 42ECh. 2.5 - In Exercises 4146, find the cardinality of the...Ch. 2.5 - In Exercises 4146, find the cardinality of the...Ch. 2.5 - Prob. 45ECh. 2.5 - In Exercises 4146, find the cardinality of the...Ch. 2 - Prob. 1RECh. 2 - Prob. 2RECh. 2 - Prob. 3RECh. 2 - Prob. 4RECh. 2 - Prob. 5RECh. 2 - Prob. 6RECh. 2 - Prob. 7RECh. 2 - Prob. 8RECh. 2 - Prob. 9RECh. 2 - Prob. 10RECh. 2 - For Exercises 912, write each set using...Ch. 2 - Prob. 12RECh. 2 - For Exercises 1320, state whether the set is...Ch. 2 - Prob. 14RECh. 2 - Prob. 15RECh. 2 - Prob. 16RECh. 2 - Prob. 17RECh. 2 - Prob. 18RECh. 2 - Prob. 19RECh. 2 - Prob. 20RECh. 2 - For Exercises 2124, decide if the statement is...Ch. 2 - Prob. 22RECh. 2 - For Exercises 2124, decide if the statement is...Ch. 2 - For Exercises 2124, decide if the statement is...Ch. 2 - For Exercises 2124, decide if the statement is...Ch. 2 - Prob. 26RECh. 2 - Prob. 27RECh. 2 - Prob. 28RECh. 2 - Prob. 29RECh. 2 - Prob. 30RECh. 2 - Prob. 31RECh. 2 - Prob. 32RECh. 2 - Prob. 33RECh. 2 - Prob. 34RECh. 2 - Prob. 35RECh. 2 - Prob. 36RECh. 2 - Prob. 37RECh. 2 - Prob. 38RECh. 2 - Prob. 39RECh. 2 - Prob. 40RECh. 2 - Prob. 41RECh. 2 - Prob. 42RECh. 2 - Prob. 43RECh. 2 - Prob. 44RECh. 2 - Prob. 45RECh. 2 - Prob. 46RECh. 2 - Prob. 47RECh. 2 - For Exercises 4750, draw a Venn diagram and shade...Ch. 2 - Prob. 49RECh. 2 - Prob. 50RECh. 2 - If n(A) = 15, n(B) = 9, and n(A B) = 4, find n(A ...Ch. 2 - Prob. 52RECh. 2 - Prob. 53RECh. 2 - Prob. 54RECh. 2 - Prob. 55RECh. 2 - Prob. 56RECh. 2 - Prob. 57RECh. 2 - A hearing specialist conducts a study on hearing...Ch. 2 - 59. Fifty-three callers to a campus radio station...Ch. 2 - Prob. 60RECh. 2 - Prob. 61RECh. 2 - Prob. 62RECh. 2 - Prob. 63RECh. 2 - Prob. 1CTCh. 2 - Prob. 2CTCh. 2 - Prob. 3CTCh. 2 - Prob. 4CTCh. 2 - Prob. 5CTCh. 2 - Prob. 6CTCh. 2 - Prob. 7CTCh. 2 - Prob. 8CTCh. 2 - Prob. 9CTCh. 2 - Prob. 11CTCh. 2 - Prob. 12CTCh. 2 - Prob. 13CTCh. 2 - Prob. 14CTCh. 2 - Prob. 15CTCh. 2 - Prob. 16CTCh. 2 - Prob. 17CTCh. 2 - Prob. 18CTCh. 2 - Prob. 19CTCh. 2 - Prob. 20CTCh. 2 - Prob. 21CTCh. 2 - A student studying for a masters degree in sports...Ch. 2 - Prob. 23CTCh. 2 - Prob. 24CTCh. 2 - Prob. 25CTCh. 2 - Prob. 26CTCh. 2 - Prob. 27CTCh. 2 - Prob. 28CTCh. 2 - Prob. 29CTCh. 2 - For Exercises 2530, state whether each is true or...
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- A study showed that 64% of supermarket shoppers believe supermarket brands to be as good as national name brands. To investigate whether this result applies to its own product, the manufacturer of a national name-brand ketchup asked a sample of shoppers whether they believed that supermarket ketchup was as good as the national brand ketchup. Only Barrow_forwardThe television show Lett3rs has been successful for many years. That show recently had a share of 19, which means, that among the TV sets in use, 19% were tuned to Lett3rs. An advertiser wants to verify that 19% share value by conducting its own survey, and a pilot survey begins with 10 households have TV sets in use at the time of a Lett3rs broadcast. If at most one household is tuned to Lett3rs, does it appear that the 19% share value is wrong? (Hint: Is the occurrence of at most one household tuned to Lett3rs unusual?) A. no, it is not wrongB. yes, it is wrongarrow_forwardThe owner of a popular coffee shop believes that customers who drink espresso are less likely to use their own cup compared with customers who drink coffee. Customers using their own cups get a 5% discount, which is displayed on the receipt. The owner randomly selects 50 receipts from all espresso purchases and 50 receipts from all coffee purchases. For espresso purchases, 15 receipts showed that the customer used their own cup. For coffee purchases, 24 receipts showed the customer used their own cup. Let pEspresso= the true proportion of customers who drink espresso and use their own cup and pCoffeee = the true proportion of customers who drink coffee and use their own cup. The P-value for this significance test is 0.033. Which of the following is the correct conclusion for this test of the hypotheses The owner should reject the null hypothesis since 15 < 24. There is convincing evidence that the true proportion of customers who drink espresso and use their own cup is…arrow_forward
- Economist Arthur Laffer suggests that beyond a certain point, high tax rates depress the economy so much that they actually reduce tax revenues. He proposed tax reductions as a means of stimulating the economy and, as a result, increase tax revenues. In the mid 1990’s Time magazine reported that 30% of the US Congress supported a tax cut as a means of stimulating the economy and increasing tax revenues. Suppose at that time 5 members of congress were randomly selected for an interview and asked whether they supported a tax cut to stimulate the economy. 1.2) Find the probability that at least three of the five members of congress who were interviewed were in favour of a tax cut (rounded off to four decimals).arrow_forwardThe manager of a theater that is open to residents of two towns, A and B, wants to know if the proportion of households from A that use the library is smaller than the proportion of households from B. In order to test this, the manager asks 45 households in A and 49 households in B whether anyone in their household had used the theater last summer. 23 of the households surveyed in A responded "yes", and 35 of the households in B responded "yes". Find the p-value that would be used to make a conclusion for this hypothesis test.arrow_forwardMeteno’s products account for 59% of the U.S. snack chip industry, and there aremore than 45,000 Meteno employees in North America. In the late 1990s, despite itsoverall popularity, Meteno faced a general lack of appeal to Hispanics. In an effort tobetter penetrate that market, Meteno hired various market researchers to determinewhy Hispanics were not purchasing their products as often as company officials hadhoped and what could be done about the problem. In the studies, market researchersdiscovered that: Hispanics thought Meteno products were too bland, Metenoadvertisements were not being widely viewed by Hispanics, and Hispanics tended topurchase snacks in small bags at local grocery stores rather than in the large familystylebags sold at large supermarkets.Focus groups composed of male teens and male young adults—a group that tends toconsume a lot of chips—were formed. The researchers determined that even thoughmany of the teens spoke English at school, they spoke Spanish at home…arrow_forward
- Meteno’s products account for 59% of the U.S. snack chip industry, and there aremore than 45,000 Meteno employees in North America. In the late 1990s, despite itsoverall popularity, Meteno faced a general lack of appeal to Hispanics. In an effort tobetter penetrate that market, Meteno hired various market researchers to determinewhy Hispanics were not purchasing their products as often as company officials hadhoped and what could be done about the problem. In the studies, market researchersdiscovered that: Hispanics thought Meteno products were too bland, Metenoadvertisements were not being widely viewed by Hispanics, and Hispanics tended topurchase snacks in small bags at local grocery stores rather than in the large familystylebags sold at large supermarkets.Focus groups composed of male teens and male young adults—a group that tends toconsume a lot of chips—were formed. The researchers determined that even thoughmany of the teens spoke English at school, they spoke Spanish at home…arrow_forwardBefore the Christmas shopping rush began, a department store had noted that the percentage of customers who use a major credit card, the percentage who use the store’s credit card, the percentage who pay by personal check, and the percentage who pay with cash are all the same, 25%for each. During the Christmas season, in a sample of 200 shoppers, 47 used a major credit card, 40 used the store’s credit card, 49 paid with a personal check, and 64 paid with cash. At a 95% confidence level, test to see if the methods of payment have changed during the Christmas shopping rush.arrow_forwardAmong college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 75% . After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 75% . A poll is commissioned, and 207 out of a random sample of 275 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.01 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of test statistic to use. ▼(Choose one) (c) Find the value of the test statistic. (Round…arrow_forward
- The University is considering changing the email system that they currently use. Since there are substantial learning costs associated with any new software, the University only wants to change to the new system if it is very confident that there is at least a 20% difference in the proportion of faculty and staff who say they like the new system. In a sample of 139 users of the current system, the University finds that 66 say they like the current system. In another sample of 92 experimental users of the “new” system, the University finds that 73 of them like the new system. When testing the hypothesis (using a 5% level of significance) that there is at least a 20% difference in the proportion of users who like the two systems, what is the test statistic? (please round your answer to 2 decimal places)arrow_forwardAmong college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 75%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 75%. A poll is commissioned, and 207 out of a random sample of 255 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.05 level of significance?Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. A. State the null hypothesis H0 and the alternative hypothesis H1 B. Would (Z) (t) (Chi-square) or (F) be the best statistic to use? C. Find the value of the test statistic. (Round to three or more decimal places.) D. Find the critical value. (Round to three or more decimal places.) E. Is…arrow_forwardAmong college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 65%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 65%. A poll is commissioned, and 172 out of a random sample of 255 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.05 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. a. State the null hypothesis H0 and the alternative hypothesis H1. b.Find the value of the test statistic c. Find the p-value d. Is there enough evidence to support the political scientists claim that the proportion of college students who say they're interested in their district's election…arrow_forward
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