2.3.4.Consider the following hypothesis test:Но: и= 18Ha: µ # 186.A sample of 48 provided a sample mean x = 17 and a sample standard deviations =4.4. Enter negative values as negative numbers.7.a. Compute the value of the test statistic (to three decimal places).8.9.b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value (to two decimal places).10.p-value is betweenandC. At α -0.05, what is your conclusion?11.p-value is- Select your answer -v Ho.12.d. What is the rejection rule using the critical value?13.Reject Ho if t is- Select your answer -V or t is- Select your answer -14.What is your conclusion (to three decimal places)?15.t =- Select your answer - v Họ.16.17.185.

Answered: Image /qna-images/answer/96b0cd20-1078-438e-a888-d66121a5e70a.jpg

Answered: 3. 4. Consider the following hypothesis…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

1. The fuel efficiency of a new model pick-up truck (truck) is measured in miles per gallon (mpg). A company claims that their new truck gets 25 mpg on average. A consumer group thinks the company is lying and claims that the mean mileage for all the trucks is less than 25 mpg. In a random sample, of forty-five of these trucks the mean mpg was 23.3 mpg with a standard deviation of 5.1 mpg. a. Conduct a hypothesis test to test the consumer group's claim at the 5% significance level. Be sure to state you Ho and Ha, your test statistic and p- value, whether or not you reject Ho and whether you support the claim. b. Write a complete sentence describing what a Type I error is in context. c. Write a complete sentence describing what a Type II error is in context.
15. The Exotic Fruit Juice Co. sell cartons of Passion Fruit and Orange fruit juice. The amount of liquid in each carton is normally distributed with a mean of 266ml and a standard deviation of 20ml. Cartons containing more than 300ml produce no profit. What percentage of cartons will this be?
. A medical researcher wishes to see whether the pulse rate of smokers are higher than the pulse rates of non-smokers. Samples of 100 smokers and 100 nonsmokers are selected. The results are shown below. Can the researcher conclude at an alpha = 0.05, that smokers have higher pulse rates than nonsmokers? Smokers Non-Smokers Mean = 90 Mean = 88 Standard Deviation = 5 Standard Deviation = 6
choose the best answers to the given questions or statements.
3. The average height of females in the freshman class of a certain college has been 162.5 centimeters with a standard deviation of 6.9 centimeters. Is there reason to believe that there has been a change in the average height if a random sample of 50 females in the present freshman class has an avèrage height of 165.2 centimeters? Use a 0.02 level of significance.
2. Alfred scored 82 in a quiz in English for which the average Score of the class was 75 with a standard deviation of 10. He also took a quiz in Statistics and scored 70 for which the average score of the class was 55, and the standard deviation was 14. Relative to other students in the class, did Alfred do better in English or Statistics?
5. ERP Companyis a company that produces Brand A toothpaste and uses a machine to package 250 grams per tube. Assume that the net weight is normally distributed with a population standard deviation of 10 grams. A randomly selected 45 tubes of Brand A toothpaste have a mean weight of 255 grams. Is the packaging machine functioning properly? Test the claim ?=250grams at 0.05 level of significance.
19. Assume that the sample has been randomly selected from a population that has a normal distribution. The standard deviation of math test scores at one high school is 16.1. A teacher claims that the standard deviation of the girls' test scores is smaller than 16.1. A random sample of 22 girls results in scores with a standard deviation of 14.3. Use a significance level of 0.01 to test the teacher's claim. Show work.
11. The owner of a large car dealership believes that the finandial crisis decreased the number of customers visiting her dealership. The dealership has historically had 800 austomers per day. The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750. Assume that the population standard deviation is350. The value of the test statistic is A. Z=-1.429 B. t99 =-1.429 C. z 1.429 D. tog 1.429 12. The Institute of Education Sciences measures the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high school credential. Last year, the high school dropout rate was8,1%. A polling company recently took a survey of 1,000 people between the ages of 16 and 24 and found that 6.5% of them are high school dropouts, The polling company would like to determine whether the dropout rate has decreased. At a 5% significance level, the decision is to A. reject Ho, we can…
3. According to the National Center for Health Statistics, the mean weight for an adult female inthe United States is 164.7 pounds. A group promoting healthier eating habits feels strongly thatit has made an impact in one community by reducing the mean weight of women in thatcommunity. A simple random sample of 39 women in this community yielded a mean weight of162.9 pounds. Assuming that the population standard deviation is 5.6 pounds, is the sufficientevidence at a a = 0.05 significance level to say that the mean weight of women in thiscommunity is lower than 164.7 pounds?
4. A college instructor gave identical tests to two randomly sampled groups of 50 students. One group took the test on paper and the other took it online. Those who took the test on paper had an average score of 75.0 with a standard deviation of 12.5. those who took the test online had an average score of 78.0 with a standard deviation of 14.0. can you conclude that the mean scores differ between online and paper tests?

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS