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 20 Model A washing...

Extracted text: 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 20 Model A washing machines is $209. Assume the population standard deviation is $18. The mean repair cost of 29 Model B washing machines is $217. ASsume the population standard deviation is $25. At x = 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). (b) Find the critical value(s) and identify the rejection region(s). The critical value(s) is/are (Round to two decimal places as needed. Use a comma to separate answers as needed.) What is/are the rejection region(s)? Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) O A. z< o="" b.="">< oc.="" z=""> (c) Find the standardized test statistic z for u, - H2. (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. O A. Reject Ho. The standardized test statistic is in a rejection region. O B. Fail to reject Ho. The standardized test statistic is in a rejection region. OC. Reject Ho. The standardized test statistic is not in a rejection region.