Homework Help is Here – Start Your Trial Now!
Math
Statistics
A company contracts with a language institute to provide instruction in Spanish for its executives who will be posted overseas. The following table gives the pretest and posttest scores on the Modern Language Association's listening test in Spanish for 20 executives. Subject Pretest Posttest Subject Pretest Posttest 1 30 29 11 30 32 2 28 30 12 29 28 31 32 13 31 34 4 26 30 14 29 32 5 20 16 15 34 32 30 25 16 20 27 34 31 17 26 28 8. 15 18 18 25 29 9. 28 33 19 31 32 10 20 25 20 29 32 a. We hope to show that the training improves listening skills. State an appropriate Ho and Ha. Describe in words the parameters that аppear in your hypotheses. b. Make a graphical check for outliers or strong skewness in the data that you will use in your statistical test, and report your conclusions on the validity of the test. c. Carry out a test. Can you reject Ho at the 5% significance level? At the 1% signifi- cance level?

A company contracts with a language institute to provide instruction in Spanish for its executives who will be posted overseas. The following table gives the pretest and posttest scores on the Modern Language Association's listening test in Spanish for 20 executives. Subject Pretest Posttest Subject Pretest Posttest 1 30 29 11 30 32 2 28 30 12 29 28 31 32 13 31 34 4 26 30 14 29 32 5 20 16 15 34 32 30 25 16 20 27 34 31 17 26 28 8. 15 18 18 25 29 9. 28 33 19 31 32 10 20 25 20 29 32 a. We hope to show that the training improves listening skills. State an appropriate Ho and Ha. Describe in words the parameters that аppear in your hypotheses. b. Make a graphical check for outliers or strong skewness in the data that you will use in your statistical test, and report your conclusions on the validity of the test. c. Carry out a test. Can you reject Ho at the 5% significance level? At the 1% signifi- cance level?

MATLAB: An Introduction with Applications
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
icon
Related questions
Question
A company contracts with a language institute to provide instruction in Spanish for its executives who will be posted overseas. The following table gives the pretest and posttest scores on the Modern Language Association's listening test in Spanish for 20 executives. Subject Pretest Posttest Subject Pretest Posttest 1 30 29 11 30 32 28 30 12 29 28 31 32 13 31 34 4 26 30 14 29 32 20 16 15 34 32 6. 30 25 16 20 27 7 34 31 17 26 28 8 15 18 18 25 29 9. 28 33 19 31 32 10 20 25 20 29 32 a. We hope to show that the training improves listening skills. State an appropriate Ho and Ha. Describe in words the parameters that appear in your hypotheses. b. Make a graphical check for outliers or strong skewness in the data that you will use in your statistical test, and report your conclusions on the validity of the test. c. Carry out a test. Can you reject Ho at the 5% significance level? At the 1% signifi- cance level?
Transcribed Image Text:A company contracts with a language institute to provide instruction in Spanish for its executives who will be posted overseas. The following table gives the pretest and posttest scores on the Modern Language Association's listening test in Spanish for 20 executives. Subject Pretest Posttest Subject Pretest Posttest 1 30 29 11 30 32 28 30 12 29 28 31 32 13 31 34 4 26 30 14 29 32 20 16 15 34 32 6. 30 25 16 20 27 7 34 31 17 26 28 8 15 18 18 25 29 9. 28 33 19 31 32 10 20 25 20 29 32 a. We hope to show that the training improves listening skills. State an appropriate Ho and Ha. Describe in words the parameters that appear in your hypotheses. b. Make a graphical check for outliers or strong skewness in the data that you will use in your statistical test, and report your conclusions on the validity of the test. c. Carry out a test. Can you reject Ho at the 5% significance level? At the 1% signifi- cance level?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 4 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
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 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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
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