and second components meet specifications are 0.96 and 0.89, respectively. Let X be the number of components n the assembly that meet specifications. a) Find the mean of X. b) Find the variance of X.

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter9: Solving Quadratic Functions
Section: Chapter Questions
Problem 4CA
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An assembly consists of two independent mechanical components. Suppose that the probabilities that the first
and second components meet specifications are 0.96 and 0.89, respectively. Let X be the number of components
in the assembly that meet specifications.
(a) Find the mean of X.
(b) Find the variance of X.
Transcribed Image Text:An assembly consists of two independent mechanical components. Suppose that the probabilities that the first and second components meet specifications are 0.96 and 0.89, respectively. Let X be the number of components in the assembly that meet specifications. (a) Find the mean of X. (b) Find the variance of X.
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