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6. For each of the following, calculate the t-statistic. a. Sample mean= 7.75, population mean= 6, s= 3.98, N= 40 b. Sample mean= 3.31, population

6. For each of the following, calculate the t-statistic. a. Sample mean= 7.75, population mean= 6, s= 3.98, N= 40 b. Sample mean= 3.31, population mean= 4, s=1.33, N= 35 c. Sample mean= 127.85, population mean= 125, s= 12.62, N= 18

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