A researcher compares two compounds (1 and 2) used in the manufacture of car tires that are designed to reduce braking d

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A Researcher Compares Two Compounds 1 And 2 Used In The Manufacture Of Car Tires That Are Designed To Reduce Braking D 1 (84.85 KiB) Viewed 25 times

A researcher compares two compounds (1 and 2) used in the manufacture of car tires that are designed to reduce braking distances for SUVS equipped with the tires. SUVs equipped with tires using compound 1 have a mean braking distance of 77 feet and a standard deviation of 12.8 fee SUVs equipped with tires using compound 2 have a mean braking distance of 85 feet and a standard deviation of 5.3 feet. Suppose that a sample 33 braking tests are performed for each compound. Using these results, test the claim that the braking distance for SUVs equipped with tires using compound 1 is shorter than the braking distance when compound 2 is used. Let u be the true mean braking distance corresponding to compoun 1 and uz be the true mean braking distance corresponding to compound 2. Use the 0.1 level of significance. Step 1 of 4: State the null and alternative hypotheses for the test. Ho: Mi H2 Hali U2 Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places. Step 3 of 4: Determine the decision rule for rejecting the null hypothesis H. Round the numerical portion of your answer to two decimal places. Reject H, if Step 4 of 4: Make the decision for the hypothesis test. O Reject Null Hypothesis b Fail to Reject Null Hypothesis