Solution Found!
Finding Binomial Probabilities In Exercise,
Chapter 4, Problem 20E(choose chapter or problem)
Problem 20E
Finding Binomial Probabilities In Exercise, find the indicated probabilities. If convenient, use technology or Table 2 in Appendix B to find the probabilities.
Safety Recall Sixty-eight percent of adults would still consider a car brand despite product/safety recalls. You randomly select 20 adults. Find the probability that the number of adults who would still consider a car brand despite product/safety recalls is (a) exactly one, (b) more than one, and (c) at most one.
Questions & Answers
QUESTION:
Problem 20E
Finding Binomial Probabilities In Exercise, find the indicated probabilities. If convenient, use technology or Table 2 in Appendix B to find the probabilities.
Safety Recall Sixty-eight percent of adults would still consider a car brand despite product/safety recalls. You randomly select 20 adults. Find the probability that the number of adults who would still consider a car brand despite product/safety recalls is (a) exactly one, (b) more than one, and (c) at most one.
ANSWER:
Solution:
Step 1 of 4:
From the given problem, we have
n = 20, p = 68%
= 0.68
The pmf of a Binomial distribution is
P(X = x) = ; x = 0, 1, 2,...., n.
Here, we have to find the probability that the number of adults who would still consider a car brand despite product/safety recalls is