stast
posted by jack .
suppose the alternative hypothesis in a hypothesis test is "the population mean is less than 60" if the sample size is 50 and alpha =.05, the critical value of the z is?

stast 
PsyDAG
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability
(p ≤ .05) and its Z score.
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