7. In order to test the effectiveness of a new math course program imposed by Campus Director,the Head of Academic Programs selects ten math students at random to take the course. Thedata show the results of examination before and after the course.Student12345678910Before Exam89828198978590847580After Exam97728099939089878584(a) State the null and alternative hypotheses and use sign test to find aP value relevant to the question of whether the course is effective.(b) Use the sign-test procedure at level nearest 0.90 to find a two-sidedconfidence interval estimate of the median difference in scores(after-before). Give the exact test.

The data is given on the results of the examination before and after the course. Sample size (n) =…

Answered: (a) State the null and alternative…

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

A genetic experiment with peas resulted in one sample of offspring that consisted of 421 green peas and 167 yellow peas. Construct a 95% confidence interval to estimate of the percentage of yellow peas. It was expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations?
The 95% Confidence Interval for the weights (in pounds) of a special type of rock has found to be 4.19, 7.48. What will be the margin of error? (Hint: Sample mean +/- margin of error = confidence interval)
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1-not attractive; 10 = extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 6,9,3,10,4,5,6,8,8,8,5,9 What is the confidence interval for the population mean μ? (Round to one decimal place as needed ) < μ <
A 90% confidence interval for the mean of airline reservations being canceled on the day of the flight is between 2.68 and 9.42 reservations. What is the point estimate of the mean of reservations that are canceled on the day of the flight?
You wish to poll N FIU students in order to determine the percentage of students (p) who agree with the statement “Hot-dogs are one of my favorite foods”. Assume that the value of p is approximately equal to 0.8. How many students (N) should you include in your next poll so that that the margin of error of a 95% confidence interval of p is at most 2.5%?
A random sample of prices of petrol per litre (in p per litre) from UK filling stations was taken during November 2021. Based on these data, a 95% confidence interval for the mean price of petrol per litre (in p per litre) was found to be (131.42, 142.22). Given that 1 litre is equivalent to 0.22 gallons calculate a 95% confidence interval for the mean price of petrol from UK filling stations in p per gallon. Explain your reasoning.
You recently sent out a survey to determine if the percentage of adults who use social media has changed from 58%, which was the percentage of adults who used social media five years ago. Of the 2625 people who responded to survey, 1730 stated that they currently use social media. a) Use the data from this survey to construct a 91% confidence interval estimate of the proportion of adults who use social media. Round your final answer to two decimal places. Next Question
The mileage a car got on 5 trips from Greenwood to Greenville was used to create a 90% confidence interval for the true mean mileage of such trips. The 90% confidence interval is (32.32, 38.32). Explain in a sentence what this confidence interval says about the car's gas mileage (in miles per gallon).
A soft drink company asked you to conduct a survey on consumer preference on their soft drink product "Papsi-Cola" in Metro Manila. Based on your survey, 340 out of 500 people preferred the soft drink "Papsi Cola". a What is the best point estimate for the true proportion of consumers preferring Papsi-Cola in Metro Manila? Construct a 95% confidence interval for the proportion of consumers in Metro Manila that prefer "Papsi-Cola". If more than 60% of the consumers prefer Papsi-Cola, the company will continue the production of the soft drink? Based on your findings, should you advise the company to continue the production of "Papsi-Cola"?
You wish to poll N FIU students in order to determine the percentage of students (p) who agree with the statement “Hot-dogs are one of my favorite foods”. Assume that the value of p is approximately equal to 0.8. How many students (N) should you include in your next poll so that that the margin of error of a 99% confidence interval of p is at most 2.5%?
Apple Computer believed that 36 percent of its smartphone customer own the most recent model of iPhone (Ho). To test this hypothesis, it gathered customer data using a CRM software. The results indicated that only 30 percent of the iPhone users owned iPhone 11, the most recent model. Assume that this percentage value was based on a sample of 300 users. Test its hypothesis using 95% confidence level.
The immunity rate for a person who received the vaccine was .07% (3 people out of 428 people) while the rate for those who were in the placebo group was 2.3% (10 people out of 426 people). Construct a 95% confidence interval for the difference in immunity rate between vaccine group and the placebo group.

SEE MORE QUESTIONS

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