9.1/7Identify the test statisticp-value In a random sample of males, it was found that 19 write with their left hands and 215 do not. In a random sample of females, it was found that 71 write with their left hands and 439 do not. Use a 0.05 significance level to test the claim that the rate of left-handedness among males is less than that among females. Complete parts (a) through (c) below.

Answered: Image /qna-images/answer/ad7be76d-0a15-4b3c-8f58-6dff6d5d23c3.jpg

Answered: In a random sample of males, it was…

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

Students in the senior capstone course (N=36) at Central State University took the Political Science subtest developed by the National Board Testing Association. The test is a 75-item, multiple choice test covering all areas of political science. The national norms for the test show a mean of 50. The mean for the students in the capstone course was 55, with a standard deviation of 15. Did the students at CSU score significantly higher than the national average? State your null and alternative hypothesis Is this a one-or-two tailed hypothesis? Explain thoroughly. Calculate the appropriate statistical test. Can you reject the null hypothesis? Why or why not?
The following data are the daily number of minutes of smartphone use for a random sample of 8students at your institution: 117, 156, 89, 72, 116, 125, 101, 100.(You may use t(df=7, 0.05) = -1.895) (a) Test the null hypothesis according to which the true mean is greater or equal to 100 minagainst the alternative that it is less than 100. Use a significance level of 5% (state the test statistic and the conclusion).
A statistics student randomly selected 45 packets of sugar and weighed the contents of each packet, getting a mean of 3.586 g and a standard deviation of 0.194 g. Test the claim that the weights of the sugar packets have a mean no longer equal to 3.5 g, as indicated on the label. Let "alpha" be 0.10 to test this claim. What is the decision/summary statement for this test?
At Atlanta’s Hartsfield International Airport, airport officials monitor the average time taken to get passenger checked luggage to the luggage belt after a flight arrival. Last year, the average time was 15 minutes. This year, a sample of 35 flights yielded a sample mean of 17 minutes and a sample standard deviation of 5 minutes. At the 5% level of significance, can you conclude that the average time to get luggage to the belt has changed from last year? How about at the 1% significance level?
U You “clock" 27 of Caruthers' fastballs, obtaining a mean of 118.7 mph, with a standard deviation of 2.2 mph. To a 1% level of significance, can it be asserted that the average Caruthers fastball (in general) is over 115 mph? JAssume that the “speeds" of all of Caruthers' fastballs are normally distributed.]
Careful analysis of a random sample of n=16 pages of a Huge Government Document published by the Office Of Printed Statistical Information (OOPSI) revealed a mean of, 5.2 spelling and/or errors of grammar per page. The standard deviation o of the number of errors per page is 3.6. does this data provide significant evidence (at, the, 5% level) that the true mean number of errors per page is less than 7 and thus good, enough for government work? State null and alternative hypothesis, calculate the test statistic, determine the P-value, and state your conclusion.
Scores on a standard IQ Test for people aged 20 to 34 are normally distributed with mean 110 and standard deviation 25. (a) A researcher wants to select the men in the bottom 25% on this intelligence scale. How low must a man score (IQ)to be selected? (b) A researcher wants to select the men in the top 15% on this intelligence scale. How high must a man score(IQ) to be selected?
In the last quarter of 2007, a group of 64 mutual funds had a mean return of a standard deviation of 0.6% Consider the Normal model N(0.052, 0.006) for the returns of these mutual funds a) What value represents the 40th percentile of these returns? b) What value represents the 99th percentile? What's the IQR, or interquartile range, of the quarterly returns for this group of funds? SOCCE a) The value that represents the 40th percentile is%. (Round to two decimal places as needed.) b) The value that represents the 99th percentile is%. (Round to two decimal places as needed.) c) The IQR is% (Round to two decimal places as needed.)
Compute the p-value for a Chi-Squared Goodness of Fit Test with a sample size of 300, 5 categories and a test statistic of 20.3323. Round to the fourth
A football team owner believes that attendance at the home stadium increases when the team has a winning season. He randomly selects 10 seasons when the team won more games than they lost and determines that the mean attendance is 88,532 people and the standard deviation is 1341 people. Ten more seasons are randomly selected from years when the team lost more games than they won with a mean of 86,910 people and a standard deviation of 1521 people. Assume all conditions for conducting a significance test have been met and that the p-value is 0.011. Which of the following conclusions should the owner make? (a) The mean attendance at the home stadium is greater when the team is having a winning season approximately 1.1% of the time. (b) The p-value indicates that the mean attendance at the home stadium is greater when the team is having a winning season at the 1% level of significance. There is a significant difference in mean attendance when the team is winning than when the team is…

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