Suppose You Are Testing the Null Hypothesis That a Population

question 85

Multiple Choice

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 alpha =.05.If the sample mean is 50 and the population standard deviation is 8,the observed z value is _______.

• A)2.5
• B)-2.5
• C)6.25
• D)-6.25
• E)12.5

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