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# Cooper found that members of couples who were very similar to each other scored higher on a normally distributed measure of intimacy than other...

Dr. Cooper found that members of couples who were very similar to each other scored higher on a normally distributed measure of intimacy than other couples. Dr. Cooper used a .05 two-tailed significance level and obtained a result of p =.0173.

Roughly sketch 4 graphs (population1, population 2, distribution of means, the sample frequency distribution) with appropriate arrows conceptually decribing using the Z-test to obtain this result.

Label population 1, population 2, distribution of means, the sample frequency distribution, the comparison distribution, the distribution that assumes the null hypothesis is true, the distribution that assumes the research hypothesis is true, the distribution that receives the manipulation, the means of all the distributions, the standard deviation of population 2, the standrad deviationof the comparison distribution, the Z of the sample mean, the alpha region, the percent of area under the curve for each alpha region, and the approximate location of the Z and the approximate location of the p of the result.