Question: The sample mean and standard deviation from a random sample of 26 observations from a normal population were computed as x=27 and s = 12.

The sample mean and standard deviation from a random sample of 26 observations from a normal population were computed as x=27 and s = 12. Calculate the t statistic of the test required to determine whether there is enough evidence to infer at the 5% significance level that the population mean is greater than 22.

Test Statistic =

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