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second type by at most 9. Should they use the first type or not? (Assume a=0.1)

second type by at most 9. Should they use the first type or not? (Assume a=0.1)

MATLAB: An Introduction with Applications
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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Two random samples of sizes 10, 13 are taken from types of plastics and tested for breaking strength. The test result is that the average strength of the first type 175 and the average strength of the second type is 160. It is known that the two samples have variances 12, 16. The company decides not to use the first type unless its strength exceeds that of second type by at most 9. Should they use the first type or not? (Assume a=0.1)
Two random samples of sizes 10, 13 are taken from types of plastics and tested for breaking strength. The test result is that the average strength of the first type 175 and the average strength of the second type is 160. It is known that the two samples have variances 12, 16. The company decides not to use the first type unless its strength exceeds that of second type by at most 9. Should they use the first type or not? (Assume a=0.1)
Transcribed Image Text:Two random samples of sizes 10, 13 are taken from types of plastics and tested for breaking strength. The test result is that the average strength of the first type 175 and the average strength of the second type is 160. It is known that the two samples have variances 12, 16. The company decides not to use the first type unless its strength exceeds that of second type by at most 9. Should they use the first type or not? (Assume a=0.1)
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