e. Find the probability that 2 or fewer of the 10 US adults believe the American Dream is out of reach.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 2C
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4.47 REACHING THE AMERICAN DREAM. Recall (Exercise
3.130, p. 145) that an Even 2019 survey found that 11% of US
adults feel that the "American Dream" (however defined) is out
of reach for them. In a random sample of 10 US adults, let x
represent the number who believe the American Dream is out of
reach.
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.
NW d. Find P(x = 3).
e. Find the probability that 2 or fewer of the 10 US
adults believe the American Dream is out of reach.
Transcribed Image Text:4.47 REACHING THE AMERICAN DREAM. Recall (Exercise 3.130, p. 145) that an Even 2019 survey found that 11% of US adults feel that the "American Dream" (however defined) is out of reach for them. In a random sample of 10 US adults, let x represent the number who believe the American Dream is out of reach. 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. NW d. Find P(x = 3). e. Find the probability that 2 or fewer of the 10 US adults believe the American Dream is out of reach.
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