The average price of a college math textbook is $157 and the standard deviation is S24. Suppose that 18 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of ? - NC b. For the group of 18, find the probability that the average price is between S150 and $158. c. Find the third 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? ONo O Yes

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.