For each of the following samples that were given an experimental treatment, test whether they represent populations that score significantly higher than the general population: (a) a sample of 105 with a mean of 84, (b) a sample of 15 with a mean of 87. The general population of individuals has a mean of 83, a standard deviation of 6, and follows a normal curve. For each sample, carry out a Z test using the five steps of hypothesis testing with a one-tailed test at the .01 significance level.

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For each of the following samples that were given an experimental treatment, test whether they represent populations that score significantly higher than the general population: (a) a sample of 105 with a mean of 84, (b) a sample of 15 with a mean of 87. The general population of individuals has a mean of 83, a standard deviation of 6, and follows a normal curve. For each sample, carry out a Z test using the five steps of hypothesis testing with a one-tailed test at the .01 significance level.

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