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If question B is a t test statistics i need the degree of freedom Expirtol The owner of a chain of mini-markets wants to compare

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If question B is a t test statistics i need the degree of freedom

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Expirtol The owner of a chain of mini-markets wants to compare the sales performance of two or her stores, Store ] and Store 2. Sales can vary considerably depending on the day of the week and the season of the year, so she decides to eliminate such effects by making sure to record each store's sales on the same 12 days, chasen at random. She records the sales (In dollars) for each store on these days, as shown In the table below. Day 12 Store 1 838 328 539 715 Store 2 758 272 519 316 737 Difference 149 (Store 1 - Store 2] send Date to calllabor Based on these dogs, can the owner concludd, at the U.IU level of significance, that the mean dally sales of the two stores differ? Answer this question by performing a hypotheses test regarding I. (which is ]) with a letter 'd' subscript), the population mean dally sales difference between the two stores. Assume that this population of differences [Store 1 minus Store 2) is normally distributed. Perform a two-called test. Then complete the parts below. Carry your Intermediate computations to three or more decimal places and round your answers as specined. (If necessary, consult a list of formulas.) (9) State the null hypothesis Ho and the alternative hypothesis H O (b) Determine the type of test sushistig to use. Type of best statistic: (Choose one) Y (C) Find the value of the best statistic. { Round to three or more decimal places.) XI (d) Find the two critical values at the 0.10 revel of significance. (Round to three or more decimal places.) and () at the 0.10 level, can the owner conclude that the mean dary sales of the bya stares after

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