Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000 machine parts inspected Defects 1 4 Probability 0.259 0.281 0.240 0.159 0.044 0.017 a) Find the mean, variance, and standard deviation of the probability distribution. he mean is Round to one decimal place as needed.)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Use the probability distribution to complete parts (a) and (b) below.
The number of defects per 1000 machine parts inspected
Defects
1
4
Probability
0.259
0.281
0.240
0.159
0.044
0.017
a) Find the mean, variance, and standard deviation of the probability distribution.
he mean is
Round to one decimal place as needed.)
Transcribed Image Text:Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000 machine parts inspected Defects 1 4 Probability 0.259 0.281 0.240 0.159 0.044 0.017 a) Find the mean, variance, and standard deviation of the probability distribution. he mean is Round to one decimal place as needed.)
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