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Suppose the average family income in an area is $50,000. a. Find an upper bound for the percentage of families with income over $500,000. b.

Suppose the average family income in an area is $50,000.

a. Find an upper bound for the percentage of families with income over $500,000.

b. Find a better upper bound if it is known that the standard deviation of incomes is $10,000.

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