3. Following are the responses to the question "How many hours do you study before amajor mathematics test ? "652753747Use the sign test to test the hypothesis at the (0:05 level of significance that the median number of hoursu student studies before a mathematics test is 3.

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Answered: 3. Following are the responses to the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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14. Sports Car: Fuel Injection The manufacturer of a sports car claims that the fuel injection system lasts 48 months before it needs to be replaced. A consumer group tests this claim by surveying a random sample of 10 owners who had the fuel injection system replaced. The ages of the cars at the time of replacement were (in months): LEGO 29 42 49 48 53 46 30 51 42 52 (i) Use your calculator to verify that the mean age of a car when the fuel injection system fails is x = 44.2 months, with standard deviation S=8.61months. (ii) Test the claim that the fuel injection system lasts less than an average of 48 months before needing replacement. Use a 5% level of significance. %3D
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0.05 level of significance. Solve for appropriate test statistic and show written work!
Pls solve both questions with details explanation and no plagiarism , for good rating
4. A college student is contemplating a possible career option. One factor that will influence his decision is the amount of money he is likely to make. He decides to look up the average salary of graduates in that profession. Which information would be more useful to him, the mean salary or the median salary? Why?
12. Dr. Pat Jones is an industrial psychologist and is currently studying stress amount internet company executives. A questionnaire was developed to measure stress. A score above 80 indicates stress at a dangerous level. A random sample of 15 executives revealed the stress scores in the attached file. homework 3 - 2.xlsx ( Stress 94, 78, 83, 90, 78, 99, 97, 90, 97, 90, 93, 94, 100, 75, 84 ) What is the point estimate of the population mean? (answer should be in xx.xxx format)
Using the z-scores you found, who is more likely to score 10 points in a game the Goodyear Silents' or their opponents and why? A. The Goodyear Silents would have a z-score furtherest from the mean so they are most likely B. Their opponents have a z-score furtherest from the mean so they are most likely C. The Goodyear Silents would have a z-score closest to the mean so they are most likely D. Their opponents have a z-score closest to the mean so they are most likely
A consumer advocacy group tests the mean vitamin C content of 50 different brands of bottled juices using, in each case, a t-test of significance in which the null hypothesis is the mean a mount of vitamin C that is on the nutrition facts label for that brand of juice. They find that two of the 50 juice brands have statistically significantly lower Vitamin C than claimed at the 0.05 level. Is this an important discovery? Explain.
why. The durations (in minutes) of power failures at a residence in the last 6 years are listed below. 32 13 123 23 56 64 71 123 71 53 What is the mean duration? Select the correct choice below and fill in any answer box to complete your choice.
Hello, I would need some.
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3. Following are the responses to the question "How many hours do you study before a major mathematics test ?" 2 7 5 3 4 7 Use the sign test to test the hypothesis at the (0:05 level of significance that the median number of hours u student studies before a mathematics test is 3.