(d): Your answer is incorrect. The owner of a chain of mini-markets wants to compare the sales performance of two of her stores, Store 1 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 8 days, chosen at random. She records the sales (in dollars) for each store on these days, as shown in the table below. Day 1 2 3 4 5 6 7 8 Store 1 1000 817 351 1 991 547 802 808 996 Store 2 722 775 78 930 407 605 416 944 Difference 278 42 273 19 61 140 197 392 52 (Store 1 - Store 2) Send data to calculator く Based on these data, can the owner conclude, at the 0.05 level of significance, that the mean daily sales of the two stores differ? Answer this question by performing a hypothesis test regarding Ha (which is μ with a letter "d" subscript), the population mean daily sales difference between the two stores. Assume that this population of differences (Store 1 minus Store 2) is normally distributed. Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho, and the alternative hypothesis H₁. Ho Hd = 0 H₁ = 0 : (b) Determine the type of test statistic to use. μ b X S 00 P □ G ? EQ Save For Later Submit Assignment: