MATHEMATICS ALL AROUND (LL)-W/MYMATHLAB
6th Edition
ISBN: 9780134800189
Author: Pirnot
Publisher: PEARSON
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Chapter 12.3, Problem 34E
To determine
To find:
The number of ways can she select to four roommates from a group of six friends.
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Suppose we want to choose 2 objects, without replacement, from the 3 objects pencil, eraser, and desk.
(a)
How many ways can this be done, if the order of the choices is taken into consideration?
(b)
How many ways can this be done, if the order of the choices is not taken into consideration?
In triathlons, it is common for racers to be placed into age and gender groups. Friends Leo and Mary both completed the Hermosa Beach Triathlon, where Leo competed in the Men, Ages, 30-34 groups while Mary competed in the Women, Ages 25-29 groups. Leo competed the race in 1:22:28 (4948 seconds), while Mary competed the race in 1:31:53 (5513 seconds). Obviously Leo finished faster, but they are curious about how they did within their respective groups. Can you help them? Here is some information on the performance of their groups:
● The finishing times of the Men, Ages 30-34 group has a mean of 4313 seconds with a standard deviation of 583 seconds.
● The finishing times of the Women, Ages, 25-29 groups has a mean of 5261 seconds with a standard deviation of 807 seconds.
●The distribution of finishing times for both groups are approximately Normal.
Remember: a better performance corresponding to a faster finish.
B) what are the z-scores for Leo's and Mary's finishing times? What do these…
In triathlons, it is common for racers to be placed into age and gender groups. Friends Leo and Mary both completed the Hermosa Beach Triathlon, where Leo competed in the Men, Ages, 30-34 groups while Mary competed in the Women, Ages 25-29 groups. Leo competed the race in 1:22:28 (4948 seconds), while Mary competed the race in 1:31:53 (5513 seconds). Obviously Leo finished faster, but they are curious about how they did within their respective groups. Can you help them? Here is some information on the performance of their groups:
● The finishing times of the Men, Ages 30-34 group has a mean of 4313 seconds with a standard deviation of 583 seconds.
● The finishing times of the Women, Ages, 25-29 groups has a mean of 5261 seconds with a standard deviation of 807 seconds.
●The distribution of finishing times for both groups are approximately Normal.
Remember: a better performance corresponding to a faster finish.
A) what percent of the triathletes did Leo finish faster than in his group?…
Chapter 12 Solutions
MATHEMATICS ALL AROUND (LL)-W/MYMATHLAB
Ch. 12.1 - In Exercises 14, you are selecting from the set...Ch. 12.1 - In Exercises 14, you are selecting from the set...Ch. 12.1 - In Exercises 14, you are selecting from the set...Ch. 12.1 - In Exercises 14, you are selecting from the set...Ch. 12.1 - Prob. 5ECh. 12.1 - Prob. 6ECh. 12.1 - Prob. 7ECh. 12.1 - Prob. 8ECh. 12.1 - How many different two-digit numbers can you form...Ch. 12.1 - How many different two-digit numbers can you form...
Ch. 12.1 - How many different three-digit numbers can you...Ch. 12.1 - How many different three-digit numbers can you...Ch. 12.1 - In Exercises 1318, assume you are rolling two...Ch. 12.1 - In Exercises 1318, assume you are rolling two...Ch. 12.1 - In Exercises 1318, assume you are rolling two...Ch. 12.1 - In Exercises 1318, assume you are rolling two...Ch. 12.1 - In Exercises 1318, assume you are rolling two...Ch. 12.1 - In Exercises 1318, assume you are rolling two...Ch. 12.1 - Recall in Example 6 that you are creating outfits...Ch. 12.1 - Recall in Example 6 that you are creating outfits...Ch. 12.1 - Use the given diagram to solve Exercises 21 and...Ch. 12.1 - Use the given diagram to solve Exercises 21 and...Ch. 12.1 - Answer Exercise 21 assuming the diagram has six...Ch. 12.1 - Prob. 24ECh. 12.1 - Assigning tasks. Stefans friends Amika, Pam, Li,...Ch. 12.1 - Making staff assignments. Suppose that the staff...Ch. 12.1 - Prob. 27ECh. 12.1 - Prob. 28ECh. 12.1 - The role-playing game Dungeons & Dragons uses a...Ch. 12.1 - Dungeons & Dragons also uses 12-sided dice. How...Ch. 12.1 - Counting license plates. An eyewitness to a crime...Ch. 12.1 - Counting license plates. In a small state, the...Ch. 12.1 - For Exercises 33 and 34, use the figures below....Ch. 12.1 - For Exercises 33 and 34, use the figures below....Ch. 12.1 - Prince William and Duchess Kate are attending the...Ch. 12.1 - Prince William and Duchess Kate are attending the...Ch. 12.1 - Prob. 37ECh. 12.1 - Prob. 38ECh. 12.1 - Stacking cans. In preparation for Thanksgiving...Ch. 12.1 - Prob. 40ECh. 12.1 - In Exercises 4144, you are buying a triple-deck...Ch. 12.1 - In Exercises 4144, you are buying a triple-deck...Ch. 12.1 - In Exercises 4144, you are buying a triple-deck...Ch. 12.1 - In Exercises 4144, you are buying a triple-deck...Ch. 12.1 - Prob. 45ECh. 12.1 - Prob. 46ECh. 12.1 - Prob. 47ECh. 12.1 - Prob. 49ECh. 12.1 - Prob. 50ECh. 12.1 - Prob. 51ECh. 12.1 - Prob. 52ECh. 12.1 - Prob. 53ECh. 12.1 - Prob. 54ECh. 12.1 - Prob. 55ECh. 12.1 - Prob. 56ECh. 12.1 - Prob. 57ECh. 12.1 - Prob. 58ECh. 12.1 - Prob. 59ECh. 12.2 - Assigning responsibilities. The board of an...Ch. 12.2 - Assigning positions. If there are 12 members on...Ch. 12.2 - Assigning officers. The Equestrian Club has eight...Ch. 12.2 - Assigning officers. If the Chamber of Commerce has...Ch. 12.2 - Choosing a stand up paddle board package. Kevin...Ch. 12.2 - Counting schedules. Jorge is using his educational...Ch. 12.2 - Counting meal possibilities. The early bird...Ch. 12.2 - Prob. 8ECh. 12.2 - In games such as Dungeons 12, determine the number...Ch. 12.2 - In games such as Dungeons 12, determine the number...Ch. 12.2 - In games such as Dungeons 12, determine the number...Ch. 12.2 - In games such as Dungeons 12, determine the number...Ch. 12.2 - In Exercises 1316, using the digits 0,1,2,...,8,9,...Ch. 12.2 - In Exercises 1316, using the digits 0,1,2,...,8,9,...Ch. 12.2 - In Exercises 1316, using the digits 0,1,2,...,8,9,...Ch. 12.2 - Prob. 16ECh. 12.2 - A truefalse quiz. In how many ways can you choose...Ch. 12.2 - A multiple-choice test. In how many ways can you...Ch. 12.2 - Planning a trip. Center City Community Colleges...Ch. 12.2 - A piano competition. In the Van Cliburn piano...Ch. 12.2 - Enumerating call letters. Radio stations in the...Ch. 12.2 - Prob. 22ECh. 12.2 - Prob. 23ECh. 12.2 - Counting license plates. In a certain state,...Ch. 12.2 - A pin tumbler lock has a series of pins, each of...Ch. 12.2 - A pin tumbler lock has a series of pins, each of...Ch. 12.2 - Counting routes for an armored van. A Wells Fargo...Ch. 12.2 - Prob. 28ECh. 12.2 - Prob. 29ECh. 12.2 - Facial arrangements. A website enables you to...Ch. 12.2 - Prob. 31ECh. 12.2 - Prob. 32ECh. 12.2 - Exercises 33 and 34 are alternative versions of...Ch. 12.2 - Prob. 34ECh. 12.2 - Prob. 35ECh. 12.2 - Assume that we wish to seat three men and three...Ch. 12.2 - Assume that we wish to seat three men and three...Ch. 12.2 - Assume that we wish to seat three men and three...Ch. 12.2 - In solving counting problems, it is often useful...Ch. 12.2 - What is the relationship between trees, slot...Ch. 12.2 - Prob. 41ECh. 12.2 - Prob. 42ECh. 12.2 - Prob. 43ECh. 12.2 - Prob. 44ECh. 12.2 - Prob. 45ECh. 12.2 - Prob. 46ECh. 12.2 - Prob. 47ECh. 12.2 - Prob. 48ECh. 12.2 - Prob. 49ECh. 12.3 - In Exercises 112, calculate each value. 4!Ch. 12.3 - Prob. 2ECh. 12.3 - In Exercises 112, calculate each value. (85)!Ch. 12.3 - In Exercises 112, calculate each value. (105)!Ch. 12.3 - In Exercises 112, calculate each value. 107Ch. 12.3 - In Exercises 112, calculate each value. 119Ch. 12.3 - Prob. 7ECh. 12.3 - In Exercises 112, calculate each value. 1192Ch. 12.3 - In Exercises 112, calculate each value. P(6,2)Ch. 12.3 - In Exercises 112, calculate each value. P(5,3)Ch. 12.3 - In Exercises 112, calculate each value. C(10,3)Ch. 12.3 - In Exercises 112, calculate each value. C(4,4)Ch. 12.3 - Prob. 13ECh. 12.3 - Prob. 14ECh. 12.3 - In Exercises 1518 find the number of permutations....Ch. 12.3 - In Exercises 1518 find the number of permutations....Ch. 12.3 - In Exercises 1518 find the number of permutations....Ch. 12.3 - In Exercises 1518 find the number of permutations....Ch. 12.3 - In Exercises 1922, find the number of...Ch. 12.3 - Prob. 20ECh. 12.3 - In Exercises 1922, find the number of...Ch. 12.3 - Prob. 22ECh. 12.3 - Find the eighth row in Pascals triangle.Ch. 12.3 - Find the tenth row in Pascals triangle.Ch. 12.3 - Use the seventh row of Pascals triangle to answer...Ch. 12.3 - Prob. 26ECh. 12.3 - Prob. 27ECh. 12.3 - In Exercises 2730, describe where each number is...Ch. 12.3 - Prob. 29ECh. 12.3 - In Exercises 2730, describe where each number is...Ch. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - Prob. 32ECh. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - Prob. 34ECh. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - Prob. 36ECh. 12.3 - Prob. 37ECh. 12.3 - Prob. 38ECh. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - Prob. 42ECh. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - In Exercises 3144, specify the number of ways to...Ch. 12.3 - In Exercises 4548, determine the number of ways to...Ch. 12.3 - Prob. 46ECh. 12.3 - Prob. 47ECh. 12.3 - Prob. 48ECh. 12.3 - In Exercise 49 and 50, determine why the given...Ch. 12.3 - Prob. 50ECh. 12.3 - Prob. 51ECh. 12.3 - A typical bingo card is shown in the figure. The...Ch. 12.3 - Prob. 53ECh. 12.3 - A typical bingo card is shown in the figure. The...Ch. 12.3 - In Exercise 5568, use the fundamental counting...Ch. 12.3 - In Exercise 5568, use the fundamental counting...Ch. 12.3 - In Exercise 5568, use the fundamental counting...Ch. 12.3 - Prob. 58ECh. 12.3 - Prob. 59ECh. 12.3 - Prob. 60ECh. 12.3 - In Exercise 5568, use the fundamental counting...Ch. 12.3 - Prob. 62ECh. 12.3 - Prob. 63ECh. 12.3 - Prob. 64ECh. 12.3 - In Exercise 5568, use the fundamental counting...Ch. 12.3 - Prob. 66ECh. 12.3 - Prob. 67ECh. 12.3 - Prob. 68ECh. 12.3 - Prob. 69ECh. 12.3 - Prob. 70ECh. 12.3 - Prob. 71ECh. 12.3 - Prob. 72ECh. 12.3 - Prob. 73ECh. 12.3 - Prob. 74ECh. 12.3 - Prob. 75ECh. 12.3 - Prob. 76ECh. 12.3 - Prob. 77ECh. 12.3 - Prob. 78ECh. 12.3 - Prob. 79ECh. 12.3 - Prob. 80ECh. 12.3 - Prob. 81ECh. 12.3 - Prob. 82ECh. 12.3 - Prob. 83ECh. 12.3 - Prob. 84ECh. 12.3 - Prob. 85ECh. 12.3 - Prob. 86ECh. 12.3 - Prob. 87ECh. 12.3 - Prob. 88ECh. 12.3 - Prob. 89ECh. 12.4 - Exercises 16 are based on the slot machine shown...Ch. 12.4 - Exercises 16 are based on the slot machine shown...Ch. 12.4 - Exercises 16 are based on the slot machine shown...Ch. 12.4 - Exercises 16 are based on the slot machine shown...Ch. 12.4 - Prob. 5ECh. 12.4 - Exercises 16 are based on the slot machine shown...Ch. 12.4 - Exercises 712 deal with the poker hands described...Ch. 12.4 - Exercises 712 deal with the poker hands described...Ch. 12.4 - Prob. 9ECh. 12.4 - Exercises 712 deal with the poker hands described...Ch. 12.4 - Exercises 712 deal with the poker hands described...Ch. 12.4 - Exercises 712 deal with the poker hands described...Ch. 12.4 - Prob. 13ECh. 12.4 - Why are we using combinations rather than...Ch. 12.4 - Prob. 15ECh. 12.4 - Prob. 16ECh. 12.4 - Playing poker. How many poker hands are less in...Ch. 12.CR - Prob. 1CRCh. 12.CR - The game Dungeons & Dragons uses a tetrahedral die...Ch. 12.CR - Prob. 3CRCh. 12.CR - Prob. 4CRCh. 12.CR - Prob. 5CRCh. 12.CR - Prob. 6CRCh. 12.CR - Prob. 7CRCh. 12.CR - Prob. 8CRCh. 12.CR - Prob. 9CRCh. 12.CR - Prob. 10CRCh. 12.CR - You are going to serve gourmet cupcakes at your...Ch. 12.CR - Prob. 12CRCh. 12.CR - Prob. 13CRCh. 12.CR - Prob. 14CRCh. 12.CR - Prob. 15CRCh. 12.CR - Prob. 16CRCh. 12.CR - Prob. 17CRCh. 12.CT - List all the ways you can select two different...Ch. 12.CT - Prob. 2CTCh. 12.CT - Prob. 3CTCh. 12.CT - Use the sixth row of Pascals triangle to find the...Ch. 12.CT - Prob. 5CTCh. 12.CT - Prob. 6CTCh. 12.CT - Prob. 7CTCh. 12.CT - Prob. 8CTCh. 12.CT - Prob. 9CTCh. 12.CT - Prob. 10CTCh. 12.CT - Prob. 11CTCh. 12.CT - Prob. 12CTCh. 12.CT - Write an equation that relates the expressions...Ch. 12.CT - Prob. 14CTCh. 12.CT - Prob. 15CTCh. 12.CT - Prob. 16CT
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