In a recent poll, 13% of all respondents said that they were afraid of heights. Suppose this percentage is true for all Americans. Assume responses from different individuals are independent. (a) What is the probability of having 3 randomly selected Americans all say that they are afraid of heights? (Enter a decimal as your answer, round to the nearest thousandth when necessary) (b) What is the probability of having none of the 3 randomly selected Americans say that they are afraid of heights? (Enter a decimal as your answer, round to the nearest thousandth when necessary)

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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2. In a recent poll, 13% of all respondents said that they were afraid of heights. Suppose this
percentage is true for all Americans. Assume responses from different individuals are independent.
(a) What is the probability of having 3 randomly selected Americans all say that they are afraid of
heights? (Enter a decimal as your answer, round to the nearest thousandth when necessary)
(b) What is the probability of having none of the 3 randomly selected Americans say that they are
afraid of heights? (Enter a decimal as your answer, round to the nearest thousandth when
necessary)

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