Working on summer vacation. Recall (Exercise 3.13, p. 145) that a Harris Interactive (July 2013) poll found
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Working on summer vacation. Recall (Exercise 3.13, p. 145) that a Harris Interactive (July 2013) poll found that 22% of U.S. adults do not work at all while on summer vacation. In a random sample of 10 U.S. adults, let x represent the number who do not work during summer vacation.
a. For this experiment, define the event that represents a "success."
b. Explain why x is (approximately) a binomial random variable.
c. Give the value of p for this binomial experiment.
d. Find P1x = 32.
e. Find the probability that 2 or fewer of the 10 U.S. adults do not work during summer vacation.
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Related Book For
Statistics For Business And Economics
ISBN: 9780134506593
13th Edition
Authors: James T. McClave, P. George Benson, Terry Sincich
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