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March 4, 2015

March 4, 2015

Posted by **Anonymous** on Sunday, April 29, 2012 at 11:57pm.

a) write out the null and alternative hypotheses.

b)calculate the A test statistic.

c)find the p-value both from A

d)what would be the conclusion of the auditor i.e., reject or not reject? justify answer with p-value

e)what would be the conclusion of the auditor if the level of significance is 1%(i.e., =.01) justify answer.

- statistics -
**PsyDAG**, Monday, April 30, 2012 at 11:47amHo: mean1 = mean2

Ha: mean1 ≠ mean2

Z = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√n

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion from the Z score.

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