Homework Help: Statistics

Posted by Mrs. Lakshmi on Thursday, December 31, 2009 at 5:07am.

A random sample of size 20 from a normal population will sample mean 42 and sample standard deviation of 6 . To test the hypothesis the population mean 44 at 5% level of significance , find the p-value and comment

Statistics - PsyDAG, Thursday, December 31, 2009 at 9:26am
Ho: mean1 = mean2
H1: mean1 ≠ mean2

Z = (mean 1 -mean2)/ (SD/sq rt N)

Find Z value and look it up in table in the back of your statistics text called something like "areas under normal distribution" to get p value.

I hope this helps.

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