Physics

Physics, 20.08.2019 12:50, aleilyg2005

How does a smoother surface affect braking distance

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Physics, 30.06.2019 18:10, Danyboy10

When a car brakes, work is done to stop the car. how does the braking force affect the braking distance?

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Mathematics, 30.07.2019 20:30, washingtonwhitney995

Aresearcher 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 61 feet and a standard deviation of 8.3 feet. suvs equipped with tires using compound 2 have a mean braking distance of 67 feet and a standard deviation of 11.0 feet. suppose that a sample of 77 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 μ1 be the true mean braking distance corresponding to compound 1 and μ2 be the true mean braking distance corresponding to compound 2. use the 0.05level of significance.step 3 of 4 : determine the decision rule for rejecting the null hypothesis h0. round the numerical portion of your answer to three decimal places.

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Mathematics, 01.10.2019 03:00, alyahmarie00

Aresearcher 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 44 feet and a standard deviation of 8.1 feet. suvs equipped with tires using compound 2 have a mean braking distance of 47 feet and a standard deviation of 11.7 feet. suppose that a sample of 51 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 μ1 be the true mean braking distance corresponding to compound 1 and μ2 be the true mean braking distance corresponding to compound 2. use the 0.05 level of significance.

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