a I have placed my work and my answer on my answer sheet b I want to have

A i have placed my work and my answer on my answer

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a) I have placed my work and my answer on my answer sheet. b) I want to have points deducted from my test for not working this problem. Question 20 Your answer is CORRECT. This is a written question, worth 14 points. DO NOT place the problem code on the answer sheet. A proctor will fill this out after exam submission. Show all steps (work) on your answer sheet for full credit. Problem Code: 2023In a recent publication, it was reported that the average highway gas mileage of tested models of anew car was 33.1 mpg and approximately normally distributed. A consumer group conducts itsown tests on a simple random sample of 15 cars of this model and finds that the mean gas mileagefor their vehicles is 31.2 mpg with a standard deviation of 3.6 mpg.Part a: Perform a test to determine if these data support the contention that the true mean gasmileage of this model of car is different from the published value. 10 of 11 7/20/14, 11:28 AM
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Part b: Perform a test to determine if these data support the contention that the true mean gasmileage of this model of car is less than the published value.Part c: Explain why the answers to part a and part b are different. a) I have placed my work and my answer on my answer sheet. b) I want to have points deducted from my test for not working this problem. Question 21 Your answer is CORRECT. This is a written question, worth 14 points. DO NOT place the problem code on the answer sheet. A proctor will fill this out after exam submission. Show all steps (work) on your answer sheet for full credit. Problem Code: 2123Suppose the random variable X has pdf given by the following function with 0 xaPart a:Find the value of aso that this is a valid pdf. : Part b: Find P(x 1) a) I have placed my work and my answer on my answer sheet. b) I want to have points deducted from my test for not working this problem. 11 of 11 7/20/14, 11:28 AM
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