You want to buy a washing machine, and a salesperson tells you that the mean repair costs for Model A and Model B are equal. You research the repair costs. The mean repair cost of 29 Model A washing machines is $211. Assume the population standard deviation is $15. The mean repair cost of 26 Model B washing machines is $216. Assume the population standard deviation is $25. At a = 0.01, can you reject the salesperson's claim? Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e). O A. The mean repair cost for Model A is greater than Model B. B. The mean repair costs for Model A and Model B are equal. O C. The mean repair cost for Model A is less than Model B. OD. The mean repair costs for Model A and Model B are different. Let u, be the mean repair cost for Model A and let u2 be the mean repair cost for Model B. What are Ho and Ha? O A. HO: H1

H2 Ha: H1 2 H2 Ha: H1 - H2 O D. HO: H1 > H2 OE. HO: H1 # H2 OF. HO: Hi Z H2 Ha: H1