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# Suppose in the population, the Anger-Out score for men is two points higher than it is for women. The population variances for men and women are...

25. Suppose in the population, the Anger-Out score for men is two points higher than it is for women. The population variances for men and women are both 20. Assume the Anger-Out scores for both genders are normally distributed. Given this information about the population parameters:(a) What is the mean of the sampling distribution of the difference between means?