MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The average price of a college math textbook is $167 and the standard deviation is $25. Suppose that 50 textbooks are randomly chosen. Round all answers to 4 decimal places where possible.
- What is the distribution of ¯xx¯? ¯xx¯ ~ N(____, ______)
- For the group of 50, find the
probability that the average price is between $162 and $167. _________ - Find the third
quartile for the average textbook price for thissample size . $ (round to the nearest cent)____________ - For part b), is the assumption that the distribution is normal necessary? Yes/No
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