Suppose the alternative hypothesis in a hypothesis test is "the population mean is greater than 60".If the sample size is 80 and alpha = .01, the critical value of z is ___.
A)2.575
B)-2.575
C)2.33
D)-2.33
E)2.45

Question

Quizplus · Accepted Answer

For a one-tailed test with alpha = 0.01, the critical z-value is 2.33, as it represents the cutoff point in the upper tail of the standard normal distribution.

Suppose the Alternative Hypothesis in a Hypothesis Test Is "The