Question
Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000 machine parts inspected Defects 0 1 2 3
Use the probability distribution to complete parts (a) and (b) below.
The number of defects per 1000 machine parts inspected
Defects | 0 | 1 | 2 | 3 | 4 | 5 | |
---|---|---|---|---|---|---|---|
Probability | 0.266 | 0.293 | 0.235 | 0.149 | 0.043 | 0.014 |
Question content area bottom
Part 1
(a) Find the mean, variance, and standard deviation of the probability distribution.
The mean is
1.51.5.
(Round to one decimal place as needed.)
Part 2
The variance is
1.21.2.
(Round to one decimal place as needed.)
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Get StartedRecommended Textbook for
Statistical Techniques in Business and Economics
Authors: Douglas A. Lind, William G Marchal
17th edition
1259666360, 978-1259666360
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