Question: Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothesis that the population

Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothesis that the population mean is greater than 46. The sample size is 25 and = .05. Assuming that the population is normally distributed, if the sample mean is 50 and the population standard deviation is 8, the observed z value is _______.

12.5

6.25

-2.5

-6.25

2.5

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