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
Correct Answer:
Verified
Correct Answer:
Verified
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