What is the test statistic?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
please answer for what is the test statistic
The telephone company wants to investigate the desirability of beginning a marketing campaign that would offer customers the right to purchase an additional
telephone line at a substantially reduced installation cost. The campaign will be initiated if there is evidence that more than 20% of the customers would consider
purchasing an additional telephone line if it were made available at a substantially reduced installation cost. A random sample of 500 households is selected.
The results indicate that 123 of households would purchase the additional telephone line at a reduced installation cost. Complete parts a and b.
Click here to view page 1 of the Normal table. Click here to view page 2 of the Normal table.
.....
a. At the 0.05 level of significance, is there evidence that more than 20% of customers would purchase the additional telephone line?
Let a be the population proportion. Determine the null hypothesis, Ho, and the alternative hypothesis, H,.
Ho:a s 0.20
H,: n > 0.20
What is the test statistic?
ZSTAT =| |(Round to two decimal places as needed.)
Transcribed Image Text:The telephone company wants to investigate the desirability of beginning a marketing campaign that would offer customers the right to purchase an additional telephone line at a substantially reduced installation cost. The campaign will be initiated if there is evidence that more than 20% of the customers would consider purchasing an additional telephone line if it were made available at a substantially reduced installation cost. A random sample of 500 households is selected. The results indicate that 123 of households would purchase the additional telephone line at a reduced installation cost. Complete parts a and b. Click here to view page 1 of the Normal table. Click here to view page 2 of the Normal table. ..... a. At the 0.05 level of significance, is there evidence that more than 20% of customers would purchase the additional telephone line? Let a be the population proportion. Determine the null hypothesis, Ho, and the alternative hypothesis, H,. Ho:a s 0.20 H,: n > 0.20 What is the test statistic? ZSTAT =| |(Round to two decimal places as needed.)
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

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