The engineering department of a car manufacturer claims that the fuel consumption rate of a newmodel is equal to 35.2 mi/gal. The advertising department wants to test this claim so they get a sampleof 40 such cars and this sample yields i = 33.6 mi/gal and a standard deviation s=4.2 mi/gal. Test theclaim of the engineering department using a 0.05 level of significance.a) State your null and alternative hypothesisb) Choose the appropriate test statisticc) Critical values and corresponding critical regiond) Compute the test statistiCe) Decision and conclusion

a) Assume that μ defines the true fuel consumption rate of new car models.

Answered: The engineering department of a car…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A medical researcher is interested in determining if there is a relationship between adults over 50 who exercise regularly and levels of blood pressure. A random sample of 236 adults over 50 is selected and the results are given below. Calculate the test statistic to test the claim that regular exercise and blood pressure are independent. Use α = 0.01.
A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 54 men and 70 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Two sample T for Men vs Women N Mean StDev SE Mean Men Women 98% CI for mu Men - mu Women (- 12.20, - 1.00) T-Test mu Men = mu Women (vs H2 O C. Ho: H1 = H2; Ha: H1 #H2 (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value =
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