b) Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic t.(d) Decide whether to reject or fail to reject the null hypothesis.(e) Interpret the decision in the context of the original claim.
b) Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic t.(d) Decide whether to reject or fail to reject the null hypothesis.(e) Interpret the decision in the context of the original claim.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
(b) Find the critical value(s) and identify the rejection region(s).
(c) Find the standardized test statistic t.
(d) Decide whether to reject or fail to reject the null hypothesis.
(e) Interpret the decision in the context of the original claim.
Transcribed Image Text:A car company says that the mean gas mileage for its luxury sedan is at least 23 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample
of 7 cars has a mean gas mileage of 20 mpg and a standard deviation of 4 mpg. At a = 0.10, test the company's claim. Assume the population is normally distributed.
Click here to view the t-distribution table.
Click here to view page 1 of the normal table,
Click here to view page 2 of the normal table.
State the appropriate hypotheses to test.
O A. Ho: H#23
H3: µ = 23
VB. H, µ2 23
H u<23
O D. Ho: us23
H,i p > 23
OC. Ho: = 23
Hi H#23
What is the value of the standardized test statistic?
The standardized test statistic is
(Round to two decimal places as needed.)
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