Total number of times the target is hit

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Suppose three marksmen shoot at a target. The ith marksman fires ni times, hitting the target each time with probability p, independently of his other shots and the shots of the other marksmen. Let X be the total number of times the target is hit.

a) Is the distribution of X binomial?

b) Find E(X) and Vαr(X).

Reference no: EM131796230

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