The life of a tire in miles, say X, is normally distributed with mean 0 and standard deviation 4 (in thousands). Past experience indicates that 0= 25 (in thousands). The manufacturer claims that the tires made by a new process have mean 0 > 25 (in thousands). Check his claim by testing Ho : 0= 25 (in thousands) versus H1: 0 > 25 (in thousands). We observed n independent values of X, say r1,..., In and we reject Ho if and only if i > c. (a) Identify the test statistics and the critical region. Express e in terms of the significance level a. (b) Determine n and e so that the power function y(8) of the test has the values y(25) = 0.04 and (28) = 0.96. (c) Suppose we observed a sample of size 64 with a sample mean i = 26 (in thousands). Compute the p-value and briefly write your conclusion.

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
Topic Video
Question

Please see attached mathematical statistics question below.

part(c)

How to determine Compute the p-value and briefly write your conclusion?

The life of a tire in miles, say X, is normally distributed with mean e and standard deviation 4 (in
thousands). Past experience indicates that 0 = 25 (in thousands). The manufacturer claims that the
tires made by a new process have mean 0 > 25 (in thousands). Check his claim by testing Ho : 0 = 25
(in thousands) versus H1 : 0 > 25 (in thousands). We observed n independent values of X, say
T1,..., In and we reject Ho if and only if i 2 c.
(a) Identify the test statistics and the critical region. Express e in terms of the significance level a.
(b) Determine n and e so that the power function y(8) of the test has the values y(25) = 0.04 and
(28) = 0.96.
(c) Suppose we observed a sample of size 64 with a sample mean i = 26 (in thousands). Compute
the p-value and briefly write your conclusion.
Transcribed Image Text:The life of a tire in miles, say X, is normally distributed with mean e and standard deviation 4 (in thousands). Past experience indicates that 0 = 25 (in thousands). The manufacturer claims that the tires made by a new process have mean 0 > 25 (in thousands). Check his claim by testing Ho : 0 = 25 (in thousands) versus H1 : 0 > 25 (in thousands). We observed n independent values of X, say T1,..., In and we reject Ho if and only if i 2 c. (a) Identify the test statistics and the critical region. Express e in terms of the significance level a. (b) Determine n and e so that the power function y(8) of the test has the values y(25) = 0.04 and (28) = 0.96. (c) Suppose we observed a sample of size 64 with a sample mean i = 26 (in thousands). Compute the p-value and briefly write your conclusion.
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
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