The braking ability was compared for two car models. Random samples of two carswere selected. The first random sample of size 64 cars yield a mean of 36 and astandard deviation of 8. The second sample of size 64 yield a sample mean of 33 anda standard deviation of 8. Do the data provide sufficient evidence to indicate adifference between the mean stopping distances for the two models? Use Alpha=0.01.Ho: µ1 – µ2 = 0 vs. Ha: µ1 – µ2 + 0 .p-value = 0.0017. Reject HoНо: Д, — м2 — 0 vs. Ha:M1 — M2 + 0. p-value —0.034. Ассеpt HoO Ho:µ1 – HzНо: И — 2 — 0 vs. Ha:M, — нz + 0. p-value—D 0.0017. Ассept HoHo: H1 – U2 = 0 vs. Ha: µ1 – µ2 + 0. p-value = 0.034. Reject Ho

Given that Sample sizes n1=64 , n2=64 Sample means X̄1=36 , X̄2=33 s1 =8…

Answered: The braking ability was compared for…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

The average farm size in the United States is 444 acres. A random sample of 40 farms in Oregon indicated a mean size of 430 acres, and the population standard deviation is 52 acres. At alpha = 0.05, can it be concluded that the average farm in Oregon differs from the national mean? Use the P-value method.
The average weight of a package of rolled oats is supposed to be at least 18 ounces. A sample of 18 packages shows a mean of 17.78 ounces with a standard deviation of 0.41. At alpha/a = .05, what is the decision rule?
A study was conducted to see if increasing the substrate concentration has an appreciable effect on the velocity of a chemical reaction. With a substrate concentration of 1.6 moles per liter, the reaction was run 16 times, with an average velocity of 7.7 micromoles per 30 minutes and a standard deviation of 1.6. With a substrate concentration of 1.9 moles per liter, 12 runs were made, yielding an average velocity of 8.9 micromoles per 30 minutes and a sample standard deviation of 1.2. Is there any reason to believe that this increase in substrate concentration cause an increase in the mean velocity of the reaction of more than 0.5 micromole per 30 minutes? Use alpha 0.01
The Merck Manual states that, for healthy adults, the mean number of milliliters of oxygen per deciliter of blood is 19.0. A company that sells vitamins claims that its multivitamin complex will increase the oxygen capacity of the blood. A random sample of 28 adults took the vitamin for six months. After blood tests, it was found that the sample mean was 20.7 ml of oxygen per deciliter of blood with a standard deviation of 6.7ml. a. At the 0.05 level, test the claim that the average oxygen capacity has increased. b. How much power do you have to detect a 3ml difference (from the null) in the average amount of oxygen in the blood? c. What sample size would you need to have 90% power to detect this observed difference?
A study was carried out to find out if the increase in substrate concentration has an appreciable effect on the rate of a chemical reaction. With a substrate concentration of 1.5 moles per liter, the reaction was performed 15 times, with an average rate of 7.5 micromoles per 30 minutes and a standard deviation of 1.5. With a substrate concentration of 2.0 moles per liter, 12 reactions were performed, yielding an average rate of 8.8 micromoles per 30 minutes and a sample standard deviation of 1.2. Is there any reason to believe that this increase in substrate concentration is due to an increase in the rate of reaction?reason to believe that this increase in substrate concentration causes an increase in the average reaction rate of more than 0.5 micromoles per 30 minutes? Use a significance level of 0.01 and assume that the populations are approximately normally distributed with equal variances.1. The parameter of interest is:2. The hypotheses for this test are:3. The calculated test…

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS