Mathematics, 11.03.2020 06:25 emfastback8868

In order to estimate the difference between the average hourly wages of employees of two branches of a department store, two independent random samples were selected and the following statistics were calculated. Downtown StoreNorth Mall StoreSample size2520Sample mean$9$8Sample standard deviation$2$1Refer to Exhibit 10-7. A 95% interval estimate for the difference between the two population means is .1.078 to 2.9221.09 to 4.0781.922 to 2.078.071 to 1.928

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