If 90% of the parts produced by a certain machine do not are not defective and which are chosen at random and with discount 25 pieces in production, what is the probability that at least 22 of these parts are functional (non-defective)? Calculate the expectation and variance of the number of non-defective parts.

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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If 90% of the parts produced by a certain machine do not
are not defective and which are chosen at random and with
discount 25 pieces in production, what is the probability
that at least 22 of these parts are functional (non-defective)? Calculate the expectation and variance of the number of
non-defective parts.

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