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A survey of25 randomly selected customers found the ages shown (in years). The mean is 33.00years and the standard deviation is 10.41 years. a) How

A survey of25 randomly selected customers found the ages shown (in years). The mean is 33.00years and the standard deviation is 10.41 years.

a) How many degrees of freedom does the t-statistic have? b) How many degrees of freedom would the t-statistic have if the sample size had been 100?

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