The probabilities that a batch of 4 computers will contain 0,1,2,3 and 4 defective computers are 0.5
Question: The probabilities that a batch of 4 computers will contain 0,1,2,3 and 4 defective computers are 0.5220, 0.3685, 0.0975, 0.0115 and 0.0005, respectively. Find the VARIANCE for the probability distribution.
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