Suppose You Are Testing the Null Hypothesis That a Population

question 65

Multiple Choice

Suppose you are testing the null hypothesis that a population mean is less than or equal to 80, against the alternative hypothesis that the population mean is greater than 80.If the sample size is 49 and alpha = .10, the critical value of z is ___.

• A)1.645
• B)-1.645
• C)1.28
• D)-1.28
• E)2.33