MATLAB: A Practical Introduction to Programming and Problem Solving
5th Edition
ISBN: 9780128154793
Author: Stormy Attaway Ph.D. Boston University
Publisher: Elsevier Science
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Chapter 6, Problem 28E
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A menu-driven program to convert a time in seconds to other units (minutes, hours, and so on) and generate a random time in seconds, call a
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A.How many functions are there from set A with 4 elements to set B with 6 elements?
B.How many one-to-one functions are there from set A with 3 elements to set B with 5 elements? In each blank, type a number and nothing else.
The owner of a pet store is trying to decide whether to discontinue selling specialty clothes for pets. She suspects that only 10% of the customers buy specialty clothes for their pets and thinks that she might be able to replace the clothes with more interesting and profitable items on the shelves. Before making a final decision she decides to keep track of the total number of customers for a day, and whether they purchase specialty clothes for their pet.
a) Assuming the pet store owner is correct in thinking that only 10% of her customers purchase specialty clothes for their pets, how many customers should she expect before someone buys a garment for their pet?
b) What is the probability that she does not sell a garment until the 5th customer?
c) What is the probability that exactly 4 of the first 10 customers buy specialty clothes for their pet?
d) What is the probability that at least 3 of the first 35 customers buy specialty clothes for their pet?…
A market research study hopes to determine if the average sales of house entertainment units will increase in a test market with the introduction of a new package. Sales recorded in a 32-day period for the old package and a 30-day period for the new package were as follows:
Chapter 6 Solutions
MATLAB: A Practical Introduction to Programming and Problem Solving
Ch. 6 - Prob. 6.1PCh. 6 - Prob. 6.2PCh. 6 - Prob. 6.3PCh. 6 - Prob. 6.4PCh. 6 - Prob. 6.5PCh. 6 - Prob. 6.6PCh. 6 - Prob. 6.7PCh. 6 - Prob. 1ECh. 6 - Prob. 2ECh. 6 - Prob. 3E
Ch. 6 - Prob. 4ECh. 6 - Prob. 5ECh. 6 - Prob. 6ECh. 6 - Prob. 7ECh. 6 - Prob. 8ECh. 6 - Prob. 9ECh. 6 - Prob. 10ECh. 6 - Prob. 11ECh. 6 - Prob. 12ECh. 6 - Prob. 13ECh. 6 - Prob. 14ECh. 6 - Prob. 15ECh. 6 - Prob. 16ECh. 6 - Prob. 17ECh. 6 - Prob. 18ECh. 6 - Prob. 19ECh. 6 - Prob. 20ECh. 6 - Prob. 21ECh. 6 - Prob. 22ECh. 6 - Prob. 23ECh. 6 - Prob. 24ECh. 6 - Prob. 25ECh. 6 - Prob. 26ECh. 6 - Prob. 27ECh. 6 - Prob. 28ECh. 6 - Prob. 29ECh. 6 - Prob. 30E
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- let A be a set with n elements and B a set with m elements. How many different functions are there from A to B? Explain. If we assume n ≤ m, ho wmany one-to-one functions from A to B are there? Explain. If we assume n > m, how many one-to-one functions from A to B are there? Explainarrow_forwardAn Internet advertising agency is studying the number of "hits" on a certain web site during an advertising campaign. It is hoped that as the campaign progresses, the number of hits on the web site will also increase in a predictable way from one day to the next. For 10 days of the campaign, the number of hits × 105 is shown. Original Time Series Day 1 2 3 4 5 6 7 8 9 10 Hits × 105 1.2 3.5 4.4 7.3 6.7 8.1 9.0 11.2 13.1 14.8 (a) To construct a serial correlation, we use data pairs (x, y) where x = original data and y = original data shifted ahead by one time period. Construct the data set (x, y) for serial correlation by filling in the following table. x 1.2 3.5 4.4 7.3 6.7 8.1 9.0 11.2 13.1 y (b) For the (x, y) data set of part (a), compute the equation of the sample least-squares line ŷ = a + bx. (Use 4 decimal places.) a b If the number of hits was 9.3 (× 105) one day, what do you predict for the number of hits the next…arrow_forwardChoose the correct option. The number of onto function from the set {1,2,….,11} to the set {1,2,….,10} is- (a)5×⌊11 (b)⌊10 (c)⌊11/2 (d)10×⌊11arrow_forward
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