Gabe makes rugs. The number of imperfections follows a Poisson distribution with an average of 4 per square yard. It costs to repair each imperfection. Find the sum of the mean and variance of the repair cost for a 10-square-yard rug.
Gabe makes rugs. The number of imperfections follows a Poisson distribution with an average of 4 per square yard. It costs to repair each imperfection. Find the sum of the mean and variance of the repair cost for a 10-square-yard rug.
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