A manufacturer claims that the average tensile strength of thread A exceeds the average tensile strength of thread B by at least 12 kilograms. To test this claim, 50 pieces of each type of thread are tested under similar conditions. Type A thread had an average tensile strength 86.7 kgs with a standard deviation of 6.28 kgs, while type B thread had an average tensile strength of 77800 grams with variance of 31.4721 kgs. Test the manufacturer claims at 5% level of significanc
A manufacturer claims that the average tensile strength of thread A exceeds the average tensile strength of thread B by at least 12 kilograms. To test this claim, 50 pieces of each type of thread are tested under similar conditions. Type A thread had an average tensile strength 86.7 kgs with a standard deviation of 6.28 kgs, while type B thread had an average tensile strength of 77800 grams with variance of 31.4721 kgs. Test the manufacturer claims at 5% level of significanc
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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A manufacturer claims that the average tensile strength of thread A exceeds the average tensile strength of thread B by at least 12 kilograms. To test this claim, 50 pieces of each type of thread are tested under similar conditions. Type A thread had an average tensile strength 86.7 kgs with a standard deviation of 6.28 kgs, while type B thread had an average tensile strength of 77800 grams with variance of 31.4721 kgs. Test the manufacturer claims at 5% level of significance.
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