A process produces cable for the local telephone company. When the process is operating correctly, cable diameter follows a normal distribution with mean 1.8 inches and standard deviation 0.03 inch. A random sample of 30 pieces of cable found diameters with a sample mean of 1.806 inches and a sample standard deviation of 0.046 inch. a) Test, at the 10% level, the null hypothesis that the population standard deviation is 0.03 inch against the alternative that it is bigger. wwwwww

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
A process produces cable for the local telephone
company. When the process is operating correctly,
cable diameter follows a normal distribution with
mean 1.8 inches and standard deviation 0.03 inch. A
random sample of 30 pieces of cable found
diameters with a sample mean of 1.806 inches and
a sample standard deviation of 0.046 inch.
a) Test, at the 10% level, the null hypothesis that the
population standard deviation is 0.03 inch against
the alternative that it is bigger.
*******
Transcribed Image Text:A process produces cable for the local telephone company. When the process is operating correctly, cable diameter follows a normal distribution with mean 1.8 inches and standard deviation 0.03 inch. A random sample of 30 pieces of cable found diameters with a sample mean of 1.806 inches and a sample standard deviation of 0.046 inch. a) Test, at the 10% level, the null hypothesis that the population standard deviation is 0.03 inch against the alternative that it is bigger. *******
Expert Solution
steps

Step by step

Solved in 3 steps with 10 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