a) What type of random experiment it is i.e. is it a binomial or hypergeometric? Give reasons to support your answer. b) Find the probability that a sample contains 2 non defective gaskets. c) Find the expectation and variance of success in a sample of size 15.
a) What type of random experiment it is i.e. is it a binomial or hypergeometric? Give reasons to support your answer. b) Find the probability that a sample contains 2 non defective gaskets. c) Find the expectation and variance of success in a sample of size 15.
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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Question
A batch of 15 rocker cover gaskets contains 6 defective gaskets. If we draw samples of size 4 without
replacement, from the batch of 15, then answer the following questions:
a) What type of random experiment it is i.e. is it a binomial or hypergeometric? Give reasons to
support your answer.
b) Find the probability that a sample contains 2 non defective gaskets.
c) Find the expectation and variance of success in a sample of size 15.
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