3. The average price of a college math textbook is $150 and the standard deviation is $25. Suppose that 11 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. b. C. d. What is the distribution of x? For the group of 11, find the probability that the average price is between $160 and $165. Find the third quartile for the average textbook price for this sample size. Round your answer to the nearest cent. For part b, is the assumption that the distribution is normal necessary? Explain your answer. Don't forget to show what you typed into your calculator.

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