The number X of days in the summer months that a construction crew cannot work because of the weather has the probability distribution: 6 | 7 8 9 10 11 12 13 14 f(x) 0.03 0.08 0.15 0.2 0.19 |0.16 0.1 0.07 0.02 The mean and standard deviation of X are respectively: 9.79 and 1.8617 O 9.74 and 1.8954 O None of the other options 9.7 and 1.9

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Q: The number X of days in the summer months that a construction crew cannot work because of the…

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A: Farmula used  E(X)=∑xP(X=x)

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Q: The number X of days in the summer months that a construction crew cannot work because of the…

A: Mean = ∑X*P(X) Variance = E(X2) - (E(X))2 Standard deviation = variance

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