An car manufacturer produces engine parts that have a lifetime which is normally distributed. A sample of 25 such parts has an average life of 61 thousand miles and standard deviation of 15 thousand miles. Test HO: 55 thousand, where μ is the average lifetime of a part, against H1: >55. Find the p-value (p). Do we retain the null hypothesis, HO? Use a significance level of 0.04. OA. p = 0.0228, test significant, do not retain null hypothesis HO B. p = 0.140, test not significant, retain null hypothesis HO C. p = 0.104, test significant, do not retain null hypothesis HO OD. p = 0.228, test not significant, do not retain null hypothesis HO

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
None
An car manufacturer produces engine parts that have a lifetime which is normally distributed. A sample of 25 such parts
has an average life of 61 thousand miles and standard deviation of 15 thousand miles. Test HO: 55 thousand, where μ
is the average lifetime of a part, against H1: >55. Find the p-value (p). Do we retain the null hypothesis, HO? Use a
significance level of 0.04.
OA. p = 0.0228, test significant, do not retain null hypothesis HO
B. p = 0.140, test not significant, retain null hypothesis HO
C. p = 0.104, test significant, do not retain null hypothesis HO
OD. p = 0.228, test not significant, do not retain null hypothesis HO
Transcribed Image Text:An car manufacturer produces engine parts that have a lifetime which is normally distributed. A sample of 25 such parts has an average life of 61 thousand miles and standard deviation of 15 thousand miles. Test HO: 55 thousand, where μ is the average lifetime of a part, against H1: >55. Find the p-value (p). Do we retain the null hypothesis, HO? Use a significance level of 0.04. OA. p = 0.0228, test significant, do not retain null hypothesis HO B. p = 0.140, test not significant, retain null hypothesis HO C. p = 0.104, test significant, do not retain null hypothesis HO OD. p = 0.228, test not significant, do not retain null hypothesis HO
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
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