You want to buy a washing machine, and a salesperson tells

Last updated: 7/20/2022

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 21 Model A washing machines is $214. Assume the population standard deviation is $17. The mean repair cost of 28 Model B washing machines is $220. Assume the population standard deviation is $22. 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). (a) Identify the claim and state Ho and H₂- What is the claim? A. The mean repair costs for Model A and Model B are different. B. The mean repair cost for Model A is greater than Model B. C. The mean repair cost for Model A is less than Model B. D. The mean repair costs for Model A and Model B are equal.