Find the mean number of accidents in a month

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The vice president of human resources at Lowes Inc. is studying the number of on-the-job accidents over a period of one month. He developed the following probability distribution.

Number of accidents (X)           0       1           2           3           4

P (x)                                    0.40   0.20    0.20   0.10      0.10

Question a) Find the mean number of accidents in a month.

Question b) Calculate the variance in the number of accidents in a month.

Question c) Determine the standard deviation.

Reference no: EM132483250

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