Sample dataMotor C O13256Motor AMotor B1468613411145271249513016136731426813630133391471013480115451244114486133071333213484119581327211432109231287512300126881177812329125311151611567 A company produces treadmills for use in exercise clubs and recreation centers. The treadmill motors are purchased from an outside vendor. Currently, the company is considering which motor to include inits new treadmill series. Three potential suppliers have been identified. The company has decided to make its decision based on how long a motor operates at a high level of speed and incline before it fails.A random sample of 10 motors of each type is selected, and each motor is tested to determine how many minutes (rounded to the nearest minute) it operates before it needs to be repaired. Use theaccompanying sample information for each motor to complete part a.E Click the icon to view the sample data.a. At the a = 0.01 level of significance, is there a difference in the average times before failure for the three different suppliers' motors?Identify the hypotheses for the test. Choose the correct answer below.O A. Ho: H1 =Hz = H3Hạ: All of the population means are differentO B. Ho: H1 = Hz = H3Ha: At least two of the population means are differentOC. Ho: H, H2# H3Ha: At least two of the population means are equalO D. Ho: H, + H2# H3Ha: All of the population means are equalFind the test statistic F.F= (Round to two decimal places as needed.)Now find the p-value.p-value =(Round to three decimal places as needed.)

Answered: Image /qna-images/answer/473c8c09-1b86-4493-b7e2-bcf79ebd81e8.jpg

Answered: a. At the a = 0.01 level of…

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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The average worker at a local brake manufacturer produces 10 brakes per day (other statistical information was not known). An industrial psychologist was hired to increase worker productivity and a new assembly method was designed and tested in a sample of workers. Identify the appropriate test. Select one: a. independent samples t test b. z test c. single sample t test d. paired samples t test
For a sample size of n = 100, and Ïƒ = 10, we want to test the hypothesis H0: Î¼ = 100. The sample mean is 103. What is the test statistic ?
please answer d, e, f f; accept, reject, fail to reject
What are the hypotheses for the test? A. H0: β1≠0 and Ha: β1=0 B. H0: β1=0 and Ha: β1<0 C. H0: β1=0 and Ha: β1>0 Your answer is not correct. D. H0: β1=0 and Ha: β1≠0 This is the correct answer. What is the test statistic? t= (Round to two decimal places as needed.) Find the P-value. P-value= (Round to three decimal places as needed.) Part 4 Which of the following is the correct conclusion for the hypothesis test? A. Do not reject H0; the data provide sufficient evidence to conclude that x is useful for predicting y. B. Reject H0; the data do not provide sufficient evidence to conclude that x is useful for predicting y. C. Do not reject H0; the data do not provide sufficient evidence to conclude that x is useful for predicting y. Your answer is correct. D. Reject H0; the data provide sufficient evidence to conclude that x is useful for predicting y. Part 5 b. Find a 95%…
The accuracy of a census report on a city in southern California was questioned by some government officials. A random sample of 1215 people living in the city was used to check the report, and the results are shown below. Census Sample Result Ethnic Origin Percent Black 10% 123 Asian 3% 46 38% Anglo Latino/Latina 471 41% 505 Native American 6% 61 All others 2% 9. A USE SALT Using a 1% level of significance, test the claim that the census distribution and the sample distribution agree. (a) What is the level of significance? State the null and alternate hypotheses. O H: The distributions are the same. H: The distributions are different. O Ho: The distributions are different. H,: The distributions are the same. O Ho: The distributions are the same. H,: The distributions are the same. O Ho: The distributions are different. H: The distributions are different. (b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places.…
Suppose we have a case-control study that completes and yields a study OR = 4.5. If we were told the true OR in the population was actually 2.25 (we normally wouldn’t know this, but suppose hypothetically someone was able to know this and told us), this again means our study OR is biased. Is our study OR biased towards or away from the null? A)Away from the null. B)Towards the null.
. A producer of high quality teas wants to be sure they are filling tea bags with an average weight of 5.5 grams. Any underfilling or overfilling is undesirable. The correct set of hypotheses is
and o from the given parameters of the population and sample size. Determine u = 84, o = 18, n = 81 .....
You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. H0: ?1 − ?2 ≤ 0 Ha: ?1 − ?2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n1 = 40 n2 = 50 x1 = 25.1 x2 = 22.8 ?1 = 5.9 ?2 = 6 (a) What is the value of the test statistic? (Round your answer to two decimal places.) (b) What is the p-value? (Round your answer to four decimal places.) (c) With ? = 0.05, what is your hypothesis testing conclusion? Reject H0. There is sufficient evidence to conclude that ?1 − ?2 > 0. Do not Reject H0. There is sufficient evidence to conclude that ?1 − ?2 > 0. Do not reject H0. There is insufficient evidence to conclude that ?1 − ?2 > 0. Reject H0. There is insufficient evidence to conclude that ?1 − ?2 > 0. I need help with parts A and B

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