Exhibit 10.4.A 7000-seat theater is interested in determining whether there is a difference in attendance between shows on Tuesday evening and those on Wednesday evening.Two independent samples of 25 weeks are collected for Tuesday and Wednesday.The mean attendance on Tuesday evening is calculated as 5500,while the mean attendance on Wednesday evening is calculated as 5850.The known population standard deviation for attendance on Tuesday evening is 550 and the known population standard deviation for attendance on Wednesday evening is 445. Refer to Exhibit 10.4.What are the appropriate hypotheses to determine whether there is a difference in attendance for shows on Tuesday evening and Wednesday evening.Use Tuesday attendance as population 1 and Wednesday attendance as population 2 or 
as the mean difference in matched-pairs sampling.
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