The population of employees in a certain large office


The population of employees in a certain large office building has weights distributed around a mean of 150 pounds, with a standard deviation of 20 pounds. A random group of 25 employees get in the elevator each morning. Find the mean and variance of:

(a) The total weight S.

(b) The average weight I. -

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Basic Statistics: The population of employees in a certain large office
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