Question

In performing a hypothesis test, the null hypothesis is population mean = 6.9 and the alternative hypothesis is population mean ≠ 6.9, a random sample of 16 items is selected. The sample mean is 7.1 and the sample standard deviation is 2.0. The population is approximated to be normal. What is the value of calculated t for this test?
Answer

0.33

0.40

0.05

0.20
0.40

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