(a) Are the two samples of daily sales amounts independent or paired (dependent) samples? Choose the best answer. O independent samples X paired (dependent) samples (b) The owner of the chain wants to use the data to determine whether the mean daily sales of Store 1 is greater than the mean daily sales of Store 2. The owner will perform a hypothesis test of the mean of the population of differences (Store 1 minus Store 2). The mean and standard deviation of the sample of differences in the bottom row are 23.8 and 83.4, respectively. Assume that the population of these differences is approximately normally distributed. Choose the appropriate test statistic for the hypothesis test that would be performed. Then calculate that statistic. Carry your intermediate computations to three or more decimal places. Round your answer to three decimal places. (If necessary, consult a list of formulas.) Oz = X ? It is unclear which test statistic to use. Submit Assignmer 02022 MeGrow Hill LLC. All Rights Reserved MacBook Air 4 6 Q W E R T Y U O P A S D F G H J K . . Z X C B N M command commandThe owner of a chain of mini-markets has two stores, Store 1 and Store 2, in one city. She recently added a breakfast station in Store 1 and wants to determine if the mean daily sales of Store 1 is greater than the mean daily sales of Store 2. After choosing 12 days at random, she records the sales (in dollars) at Store 1 for these days. Then, she records the sales at Store 2 for these same days. The data and the differences (Store 1 minus Store 2) are shown in the table below. Day 10 11 12 Store 1 951 547 437 687 547 488 776 461 815 850 518 Store 2 980 590 500 680 451 528 741 446 758 960 421 Difference (Store 1 - Store 2) -38 -52 -63 96 201 36 35 57 -101 Send data to calculator Send data to Excel (a) Are the two samples of daily sales amounts independent or paired (dependent) samples? Choose the best answer. independent samples X paired (dependent) samples (b) The owner of the chain wants to use the data to determine whether the mean daily sales of Store 1 is greater than the mean daily sales of Store 2. Submit Assign MacBook Air Q W E R T U O P 4 S D F G H J K . . Z X V N M alt 96 ption command command