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 were tested under similar conditions. Type A thread had an average tensile strength of 86.7 kilograms with a standard deviation of 6.28 kilograms, while type B thread had an average tensile strength of 77.8 kilograms with a standard deviation of 5.61 kilograms. Test the manufacturer's claim using a 0.05 level of significance. Determine the Z calc two decimal places. Blank 1 Determine the Z table in two decimal places. Blank 2 Is the manufacturing claim statistically er no, Blank 3 nk 1 Add your answer

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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 were tested
under similar conditions. Type A thread had an average tensile strength of 86.7 kilograms with a standard
deviation of 6.28 kilograms, while type B thread had an average tensile strength of 77.8 kilograms with a
standard deviation of 5.61 kilograms. Test the manufacturer's claim using a 0.05 level of significance. Determine the Z calculated in
two decimal places. Blank 1 Determine the Z table in two decimal places. Blank 2 Is the manufacturing claim statistically valid? yes
or no, Blank 3
Blank 1 Add your answer
ank 2 Add your answer
ak 3 Add your answer
Transcribed Image Text: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 were tested under similar conditions. Type A thread had an average tensile strength of 86.7 kilograms with a standard deviation of 6.28 kilograms, while type B thread had an average tensile strength of 77.8 kilograms with a standard deviation of 5.61 kilograms. Test the manufacturer's claim using a 0.05 level of significance. Determine the Z calculated in two decimal places. Blank 1 Determine the Z table in two decimal places. Blank 2 Is the manufacturing claim statistically valid? yes or no, Blank 3 Blank 1 Add your answer ank 2 Add your answer ak 3 Add your answer
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