View Policies Current Attempt in Progress Two companies manufacture a rubber material intended for use in an automotive application. The part will be subjected to abrasive wear in the field application, so we decide to compare the material produced by each company in a test. Twenty-five samples of material from each company are tested in an abrasion test, and the amount of wear after 1000 cycles is observed. For company 1, the sample mean and standard deviation of wear are x 1 = 21 milligrams/1000 cycles and s1 = 2 milligrams/1000 cycles, while for company 2 they are X 2 = 16 milligrams/1000 cycles and $2 = 8 milligrams/1000 cycles. Use a = 0.05 and assume each population is normally distributed but that their variances are not equal. (a) Test the hypothesis Ho : M1 = M2 VS H1 : M1 # #2. Calculate to = Round your answer to two decimal places (e.g. 98.76). (b) Do the data support the claim that the two companies produce material with different mean wear? (c) Do the data support a claim that the material from company 1 has higher mean wear than the material from company 2? Statistical Tables and Charts eTextbook and Media