The average price of a college math textbook is $172 and the standard deviation is $25. Suppose that 49 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of ? a N( 172 3.5714 b. For the group of 49, find the probability that the average price is between $169 and $172. c. Find the first quartile for the average textbook price for this sample size. $ (round to the nearest cent) d. For part b), is the assumption that the distribution is normal necessary? O YesO No

Question

Answer B C and D 

The average price of a college math textbook is $172 and the standard deviation is $25. Suppose that 49
textbooks are randomly chosen. Round all answers to 4 decimal places where possible.
a. What is the distribution of ? a N( 172
3.5714
b. For the group of 49, find the probability that the average price is between $169 and $172.
c. Find the first quartile for the average textbook price for this sample size. $
(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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Transcribed Image Text

The average price of a college math textbook is $172 and the standard deviation is $25. Suppose that 49 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of ? a N( 172 3.5714 b. For the group of 49, find the probability that the average price is between $169 and $172. c. Find the first quartile for the average textbook price for this sample size. $ (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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