February 28, 2017

Homework Help: statistics

Posted by emily on Sunday, April 29, 2012 at 3:11pm.

if the null hypothesis is that the mean is 3218, the alternative hypothesis is that the mean > 3228, and the sample mean is x= 3342, the sample standard deviation is s=287, the sample size is n= 42, and α= 0.01

a. calculate the z test statistic.

b. what is the p-value?

c. would this null hypothesis be rejected or not? justify answer with the p-value.

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