The manufacturer of a certain engine treatment claims that if you add their product to yourengine, it will be protected from excessive wear. An infomercial claims that a woman drove 5 hours withoutoil, thanks to the engine treatment. A magazine tested engines in which they added the treatment to the motoroil, ran theengines, drained theoil, and then determined the time until the engines seized. Complete parts (a) and (b) below.

(a) Determine the null and alternative hypotheses that the magazine will test.

H0:mu ? ? 5

H1:mu ? ? 5

(b) Both engines took exactly 16 minutes to seize. What conclusion might the magazine make based on thisevidence?

A.Theinfomercial's claim is not true.

B.Theinfomercial's claim is true.