Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places.
Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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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 distances for SUVS equipped with the tires.
SUVS equipped with tires using compound 1 have a mean braking distance of 55 feet and a standard deviation of 14.0 feet. SUVS equipped with tires using compound 2
have a mean braking distance of 58 feet and a standard deviation of 13.7 feet. Suppose that a sample of 81 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 compound 1 and u, be the true mean braking distance corresponding to compound 2. Use the 0.05 level of
significance.
Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places.
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Transcribed Image Text: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 55 feet and a standard deviation of 14.0 feet. SUVS equipped with tires using compound 2
have a mean braking distance of 58 feet and a standard deviation of 13.7 feet. Suppose that a sample of 81 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 compound 1 and u, be the true mean braking distance corresponding to compound 2. Use the 0.05 level of
significance.
Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places.
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