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November 27, 2014

November 27, 2014

Posted by **Kate** on Tuesday, March 9, 2010 at 9:19pm.

A) Regard these students as a random sample of all first-year students and suppose we know that the study times follow a Normal distribution. What is the standard error of the sample mean?

B) Consider the hypotheses H0: μ = 150 against Ha: μ < 150. What is the value of the test statistic? Give your answer to two decimal places.

- Statistics -
**PsyDAG**, Wednesday, March 10, 2010 at 11:30amZ = (144-150/Standard Error (SE) of the mean

SE = SD/sq rt of n-1

I hope this helps.

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