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A survey of 50 young professionals found that they spent an average of $19.31 when dining out, with a standard deviation of $12.11. Can you

A survey of 50 young professionals found that they spent an average of $19.31 when dining out, with a standard deviation of $12.11. Can you conclude statistically that the population mean is greater than $18?

Note: use 95% confidence to make your decision.

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