Mathematics, 22.08.2020 17:01 Savageboyn
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 75 feet and a standard deviation of 10.2 feet. SUVs equipped with tires using compound 2 have a mean braking distance of 78 78 feet and a standard deviation of 10.1 feet. Suppose that a sample of 80 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 0.1 level of significance.
Step 1 of 4: State the null and alternative hypotheses for the test.
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 H0. Round the numerical portion of your answer to two decimal places.
Step 4 of 4: Make the decision for the hypothesis test. Fail or reject to fail.
Answers: 1
Mathematics, 21.06.2019 13:30
The vertex of this parabola is at (-2, 5). which of the following could be it’s equation? a. y=3(x+2)^2-5 b. y=3(x-2)^2-5 c. y=3(x+2)^2+5 d. y=3(x-2)^2+5
Answers: 1
Mathematics, 22.06.2019 00:00
Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15
Answers: 1
Mathematics, 22.06.2019 04:30
1.)solve for z. -52=-4z 2.)solve for p 9/2.3=9.2 3.)solve for y. -1.17y=5.85 4.)solve for x. 3x/8=6
Answers: 1
A researcher compares two compounds (1 and 2) used in the manufacture of car tires that are designed...
Biology, 06.03.2021 21:00
Mathematics, 06.03.2021 21:00
Biology, 06.03.2021 21:00
Mathematics, 06.03.2021 21:00
Geography, 06.03.2021 21:00
Social Studies, 06.03.2021 21:00
Geography, 06.03.2021 21:00
History, 06.03.2021 21:00
Social Studies, 06.03.2021 21:00
Physics, 06.03.2021 21:10
Biology, 06.03.2021 21:10
Chemistry, 06.03.2021 21:10
World Languages, 06.03.2021 21:10
Arts, 06.03.2021 21:10
Mathematics, 06.03.2021 21:10