A certain trouble shooting procedure on an engine of a car has a success rate of 75%. a) Suppose that the procedure is performed on four cars. What is the probability that the procedure is successful on exactly 2 cars? b) Suppose that the procedure is performed on six cars. What is the probability that the procedure is successful for at least 3 cars? c) Suppose that the procedure is performed on five cars. What is the probability that the procedure is unsuccessful for at least 2 cars? d) what is the mean and variance of the trouble shooting procedure if performed for six cars?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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A certain trouble shooting procedure on an engine of a car has
a success rate of 75%.
a) Suppose that the procedure is performed on four cars. What
is the probability that the procedure is successful on exactly 2
cars?
b) Suppose that the procedure is performed on six cars. What is
the probability that the procedure is successful for at least 3
cars?
c) Suppose that the procedure is performed on five cars. What
is the probability that the procedure is unsuccessful for at least
2 cars?
d) what is the mean and variance of the trouble shooting
procedure if performed for six cars?
Transcribed Image Text:A certain trouble shooting procedure on an engine of a car has a success rate of 75%. a) Suppose that the procedure is performed on four cars. What is the probability that the procedure is successful on exactly 2 cars? b) Suppose that the procedure is performed on six cars. What is the probability that the procedure is successful for at least 3 cars? c) Suppose that the procedure is performed on five cars. What is the probability that the procedure is unsuccessful for at least 2 cars? d) what is the mean and variance of the trouble shooting procedure if performed for six cars?
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