Adweek/Harris (July 2011) poll found that 35% 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 P(x = 3).
e. Find the probability that 2 or fewer of the 10 U.S. adults do not work during summer vacation.
For Information: Recall (Exercise 3.14)