(2) What is the test statistic value for testing the null hypothesis that the population mean is ?
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(2) What is the test statistic value for testing the null hypothesis that the population mean is a. t = 3.98 b. t = -3.98

c. t = 4.6 d. t = -4.6 e. t = 1.96 f. cannot answer the question without more information
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