The average price of a college math textbook is $172 and the standard deviation is $28. Suppose that 13 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of ? N( b. For the group of 13, find the probability that the average price is between $171 and $183. c. Find the first quartile for the average textbook price for this sample size. S (round to the nearest cent)

The average price of a college math textbook is $172 and the standard deviation is $28. Suppose that 13 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of ? N( b. For the group of 13, find the probability that the average price is between $171 and $183. c. Find the first quartile for the average textbook price for this sample size. S (round to the nearest cent)

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MATLAB: An Introduction with Applications

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Author:Amos Gilat

Publisher:Amos Gilat

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Question

The average price of a college math textbook is $172 and the standard deviation is $28. Suppose that 13
textbooks are randomly chosen. Round all answers to 4 decimal places where possible.
a. What is the distribution of a? N(
b. For the group of 13, find the probability that the average price is between $171 and $183.
c. Find the first quartile for the average textbook price for this sample size. S
(round to the
nearest cent)
d. For part b), is the assumption that the distribution is normal necessary? O YesO No

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