Question: Suppose you are testing the null hypothesis that a population mean is greater than or equal to 60, against the alternative hypothesis that the population

Suppose you are testing the null hypothesis that a population mean is greater than or equal to 60, against the alternative hypothesis that the population mean is less than 60. The sample size is 64 and = .05. If the sample mean is 58 and the population standard deviation is 16, the observedzvalue is _______.

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