Consider the following summary data on the modulus of elasticity (x 10° psi) for lumber of three different grades. Grade J xi. S; 1 2 3 11 1.64 0.22 11 1.55 0.21 11 1.43 0.25 USE SALT Use this data and a significance level of 0.01 to test the null hypothesis of no difference in mean modulus of elasticity for the three grades. Calculate the test statistic. (Round your answer to two decimal places.) f= What can be said about the P-value for the test? ⒸP-value > 0.100 O 0.050 < P-value < 0.100 O 0.010 < P-value < 0.050 O 0.001 < P-value < 0.010
Consider the following summary data on the modulus of elasticity (x 10° psi) for lumber of three different grades. Grade J xi. S; 1 2 3 11 1.64 0.22 11 1.55 0.21 11 1.43 0.25 USE SALT Use this data and a significance level of 0.01 to test the null hypothesis of no difference in mean modulus of elasticity for the three grades. Calculate the test statistic. (Round your answer to two decimal places.) f= What can be said about the P-value for the test? ⒸP-value > 0.100 O 0.050 < P-value < 0.100 O 0.010 < P-value < 0.050 O 0.001 < P-value < 0.010
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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Transcribed Image Text:Consider the following summary data on the modulus of elasticity (x 106 psi) for lumber of three different grades.
|
Grade
1
2
3
J
xi.
S;
11 1.64 0.22
11 1.55 0.21
11 1.43 0.25
USE SALT
Use this data and a significance level of 0.01 to test the null hypothesis of no difference in mean modulus of elasticity for the three grades. Calculate the test statistic. (Round your answer to two decimal places.)
f =
What can be said about the P-value for the test?
OP-value > 0.100
O 0.050 < P-value < 0.100
O 0.010 < P-value < 0.050
O 0.001 < P-value < 0.010
O P-value < 0.001
What can you conclude?
O Reject Ho. At least two of the three grades appear to differ significantly.
O Reject Ho. The three grades do not appear to differ significantly.
● Fail to reject Ho. The three grades do not appear to differ significantly.
O Fail to reject Ho. At least two of the three grades appear to differ significantly.
You may need to use the appropriate table in the Appendix of Tables to answer this question.
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