Forty percent of all Americans who travel by car look for gas stations and food outlets that
Question:
a. What are the mean and variance of x?
b. Calculate the interval µ ± 2σ. What values of the binomial random variable x fall into this interval?
c. Find P(6 ≤ x ≤ 14). How does this compare with the fraction in the interval µ ± 2σ for any distribution? For mound-shaped distributions?
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Define x to be the number of Americans who look for s...View the full answer
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Related Book For 
Introduction To Probability And Statistics
ISBN: 9781133103752
14th Edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
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