Q15? QUESTION 15It was found that the mean annual tumover rate of the Aspirin medicine bottle is 17. The management think that the mean is changed,Therefore, a random sample of 93 is chosen that shows the average is 15 and the standard deviation is 13. Use 0.01 significance level to testthis claim,Based on the above, the test statistic is equal to?(Round answer to two decimal places ex. 2.09)QUESTION 16In an ANOVA table, k refers to the number of treatments.Click Save and Submit to save and submit. Click Save All Answers to save all answers.VO

Null hypothesis: The average weight has gone down. H0 : μ = 17. Alternative hypothesis: H1 :μ ≠ 17

Answered: QUESTION 15 It was found that the mean…

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

According to city reports, it was found that the mean age of the prison population in the city was 26 years. Marc wants to test the claim that the mean age of the prison population in his city is less than 26 years. He obtains a random sample of 25 prisoners and finds a mean age of 24.4 years and a standard deviation of 9.2 years. At a significance level of 0.05, what should his conclusion be?
The average length of time it takes to read a book can differ from one generation to another. However, the standard deviation of this reading time seems to stay steady at around 2.2 hours. A study of 50 readers from the current generation was conducted to check if the average reading time is at most 17 hours. The sample mean was 16.1 hours, with a sample standard deviation of 1.4 hours. Does the data support the claim at the 5% significance level?
The manufacturer of a particular brand of tires claims they average at least 50,000 miles before needing to be replaced. From past studies of this tire, it is known that the population standard deviation is 8,000 miles. A survey of tire owners was conducted. From the 23 tires surveyed, the mean lifespan was 40500 miles. Using alpha = 0.05, can we prove that the data is inconsistent with the manufacturers claim? We should use a test. What are the correct hypotheses? H0: Ha: Based on the hypotheses, find the following:Test Statistic=p-value= The correct decision is to . The correct conclusion would be:
The manufacturer of a particular brand of tires claims they average at least 50,000 miles before needing to be replaced. From past studies of this tire, it is known that the population standard deviation is 8,000 miles. A survey of tire owners was conducted. From the 21 tires surveyed, the mean lifespan was 42500 miles. Using alpha = 0.05, can we prove that the data in inconsistent with the manufacturers claim? We should use a test. What are the correct hypotheses? H0:H0: miles Ha:Ha: miles Based on the hypotheses, find the following:Test Statistic=p-value= The correct decision is to . The correct conclusion would be:
QUESTION 6 As an owner of a business, having a consistent level of sales is important. Prior to the recession that started in 2007, the standard deviation of the sales of a local business was $592. In a sample of 30 weeks since the start of the recession, sales have averaged $6800 per week with a standard deviation of $757. When testing the hypothesis (at the 5% level of significance) that the variance is higher than it was pre-recession, what is the test statistic? (please round your answer to 2 decimal places)
The manufacturer of a particular brand of tires claims they average at least 50,000 miles before needing to be replaced. From past studies of this tire, it is known that the population standard deviation is 8,000 miles. A survey of tire owners was conducted. From the 21 tires surveyed, the mean lifespan was 46500 miles. Using alpha = 0.05, can we prove that the data is inconsistent with the manufacturers claim? We should use a test. What are the correct hypotheses? H0: Ha: Based on the hypotheses, find the following: Test Statistic= p-value=
According to recent information from the Wheelers Association, the mean age of passenger cars in Metro Manila is 8.4 years. A sample of 40 cars in the student lots at the International Business School (IBS) showed the mean age to be 9.2 years. The standard deviation of this sample was 2.8 years. At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of IBS students?
A company claims that the average lifespan of their battery is 10 hours. A random sample of 50 batteries is selected, and the mean lifespan is found to be 9.8 hours with a standard deviation of 1.5 hours. At a 5% significance level, can we reject the claim that the mean lifespan of the battery is 10 hours?
DG Company claims that the mean sales of its products in all of their branches is worth 25.4 Million a month, with a standard deviation of 4.3 Million. However in a survey conducted by Mr. Bradguldo from their 33 branches, the mean sales is 23.2 million a month. Does the survey serve as sufficient evidence to disprove the claim of the company? Use a two-tailed test with alpha = 5%Find the following: a. Identify the type of test statistic, critical value, absolute value of test statistic b. Identify the best null hypothesis option1: there is no significant difference between population and sample means option 2: there is no significant difference between the two sample means option 3: the claim of the company is not true option 4: the claim of mr. braguldo is not true c. identify which option is NOT applicable for the test option 1: there is a significant difference between the population and sample means(u not equal to x) option 2: the mean sales of all the company's branches is…
A company wants to test the claim that their batteries life time is 40 hours. Using a simple random sample of 15 batteries yielded a mean of 44.9 hours, with a standard deviation of 8.9 hours. Test this claim using a significance level of 0.05.
The breaking strengths of cables produced by a certain manufacturer have historically had a mean of 1750pounds and a standard deviation of 50 pounds. The company believes that, due to an improvement in the manufacturing process, the mean breaking strength, μ, of the cables is now greater than 1750 pounds. To see if this is the case, 90 newly manufactured cables are randomly chosen and tested, and their mean breaking strength is found to be 1756 pounds. Can we support, at the 0.05 level of significance, the claim that the population mean breaking strength of the newly-manufactured cables is greater than 1750 pounds? Assume that the population standard deviation has not changed.Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. A. Find the value of the test statistic and round to 3 or more decimal places. (I have posted a picture of an example problem and the…

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