Answer Happy

Assume you are employed by a consumer-products rating service and your asignment to access car batteries. For this part of your investigation you want to determine whether there is a difference in useful life among the top-of-the-line car batteries produced by three menufacturers (A, B, and C). provide the database for your assessment, you randomly sample four batteries from cach manufacturer and run them through laboratory tests that allow you to determine the useful lite of each battery. The following are the results given in months of usetul battery life: Battery Manufacturer A_B_C_ 55 44 45 58 52 S2 54 SI 50 57 52 49 3 (a) Use the analys of variance with e - .DS to determine whether there is a difference among these three brands of batteries. Fill in the missing values Source SS dr Fabr Between Within Total () What is the value of Fr? Fore- (II) What do you conduce Since Fenerert Hand condude that the batteries of at least one manufacturer after regarding usetultite. Since Forectan H. We conclude that the batteries of at least one manufacturer differ regarding userulle Since Four Fontaine We conclude that the batteries of at least one manufacturer ditter regarding userule Since For Freject Hy and conduce that the batteries of at least one manutdurer differ regarding sculite (b) Suppose you are asked to make a recommendation regarding the battenes based on useful life. (1) Use the HSD test with a 0.05, taito comoare all possible means. (Select all that apply. Reject Hy for the comparison between batteries of manufacturer A and B. Reject for the comparison between batteries of manufacturer A and C. Reject for the comparison between batteries of manufacturer and C. (U) Gven the conclusion in pert). What is your recommendation? O I recommend the batteries of manufacturer A because they have significantly longer te then the batteries of manufacturers Band C. I cannot make any recommendation since the results could have been due to chance