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If family income in a local community is normally distributed with a mean of $30, 000 and standard deviation of $ 2, 500 determine a.

If family income in a local community is normally distributed with a mean of $30, 000 and standard deviation of $ 2, 500 determine

a. If there are two thousand families in the community, _____ how many have incomes less than $25, 000?

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