(Answered) The following data are the result of a historical study of

Statistics

The following data are the result of a historical study of the number of flaws found in a porcelain cup produced by a manufacturing firm. What is the expected number of flaws and the standard deviation of the number offlaws?
Flaws
Probability
0
.461
1
.285
2
.129
3
.087
4
.038

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