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December 17, 2014

Homework Help: Psychology/Statistics

Posted by Dawn on Friday, July 15, 2011 at 9:39pm.

For each of the following samples that were given an experimental treatment test whether these samples represent populations that are different from the general population (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The general population of individuals has a mean of 40, a standard deviation of 6, and follows a normal curve. For each sample carry out a Z test using the five steps hypothesis testing with a two-tailed test at the .05 significance level.
* Use the formula (xbar-x)/ (s/sqrtn) If the answer is larger than 2 reject HO, If the answer is smaller than 2 then do not reject HO.

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