(Answered) Complete parts a and b using the probability distribution

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Complete parts (a) and (b) using the probability distribution below.

The number of overtime hours worked in one week per employee

Overtime hours 0 1 2 3 4 5 6

Probability 0.016 0.063 0.178 0.283 0.220 0.173 0.067

Find the mean, variance, and standard deviation of the probability distribution.

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