When you purchased your car, the dealer told you that youraverage gas mileage on your car was 30mpg, but you suspectthat is might be lower than that.You conduct a sample over 30 days, and find that your sampleaverage is only 28 mpg, with a standard deviation of 8.2 mpg.You conduct a hypothesis test, and find a P-value of 9.6%.What are your conclusions? Use an a level of 5%O Reject H, and accept H4. You have strong evidence that yourcar does get less than 28 mpg, on average.O Accept H.. You have strong evidence that your car gets 28mpg, on average.O Reject H4. You have strong evidence that your car gets morethan 28 mpg, on average.O Fail to reject Ho. You do not have strong evidence that yourcar gets less than 28 mpg, on average.

Answered: Image /qna-images/answer/a8c83038-c648-4668-be47-42ff3449d11f.jpg

Answered: When you purchased your car, the dealer…

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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Similar questions

In a Yes/No population, 37% are Yeses. For a specific sample of size n = 43, we have P-bar = 0.48. Find the Z-score for the P-bar value.
A population of values has a normal distribution with u = 36 and o = 31.3. You intend to draw a random sample of size n = 12. Please answer the following questions, and show your answers to 1 decimal place. Find the value separating the bottom 11% values from the top 89% values. Find the sample mean separating the bottom 11% sample means from the top 89% sample means.
In a test of H0: p = 0.40 against Ha: p # 0.40, the sample data yield the test statistics z = 1.78. Find the p-value for this test. Round your answer to 4 decimal places.
Thirty different video games showing drug use were observed. The duration times of drug use (in seconds) were recorded. When using this sample for a t test of the claim that the population mean is greater than 92 sec, what does df denote, and what is its value? what's the value of df?
What is the standardized test statistic t for a sample with n = 12, xbar = 30.2, s = 2.2, and α = 0.01 if H0: µ =29? Round your answer to the nearest thousandth.
You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly different from 0.22. Your sample data produce the test statistic z = 3.03 . Find the pvalue accurate to 4 decimal places.
(c) Calculate the test statistic.
Suppose you want to test the claim that μ = 3.5. Given a sample size of n = 35 and a level of significance of a = 0.10 when should you reject Ho? This represents a The curve. hypothesis represents the claim. Reject Ho if the standardized test statistic is 10 or
Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.01 significance level to test for a difference between the measurements from the two arms. Identify the test statistic and p-value. A. T = -4.01, p-value = 0.016 B. T = -3.07, p-value = 0.037 C. T = -2.32, p-value = 0.081 D. T = -1.93, p-value = 0.127
What does a What does a value of d = 0.95 tell you? Group of answer choices There was a difference of .95 standard deviation units between the two means. Two variables are strongly correlated to each other. 90.25% of the variance in one variable is accounted for by variance in another variable. There was a .95 difference between two means. The result of the test was not statistically significant.

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