Listed below are the lead concentrations in
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
Listed below are the lead concentrations in
μg/g
measured in different traditional medicines. Use a
0.01
significance level to test the claim that the mean lead concentration for all such medicines is less than
14
μg/g.
Assume that the sample is a simple random sample.3.5
17
13
2.5
10
20
6.5
17
8.5
2.5
Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses?
H0:μ=14μg/g
H1:μ>14μg/g
H0:μ>14μg/
H1:μ<14μg/g
H0:μ=14μg/g
H1:μ≠14μg/g
H0:μ=14μg/g
H1:μ<14μg/g
Determine the test statistic.
______________
(Round to two decimal places as needed.)Determine the P-value.
____________
(Round to three decimal places as needed.)State the final conclusion that addresses the original claim.
(1) _____________H0. There is (2) evidence to conclude that the mean lead concentration for all such medicines is (3)________________ 14μg/g.
(1)
Reject OR
Fail to reject
(2)
not sufficient OR
sufficient
(3)
equal to
greater than OR
less than
not
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