The following is the probability distribution of the number of accidents in one day. X 7 8 9. 10 11 12 P(X = x) 0.13 0.21 0.09 0.33 0.12 %3D a Find the expected value of X. (d) (e) Find the variance and standard deviation of X.

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1.
The following is the probability distribution of the number of accidents in one day.
7
8
10
11
12
P(X = x)
0.13
0.21
0.09
0.33
0.12
а
(d)
(e)
Find the expected value of X.
Find the variance and standard deviation of X.
Transcribed Image Text:1. The following is the probability distribution of the number of accidents in one day. 7 8 10 11 12 P(X = x) 0.13 0.21 0.09 0.33 0.12 а (d) (e) Find the expected value of X. Find the variance and standard deviation of X.
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