A manufacturer claims that the average tensile strength of thread A exceeds the average tensile strength of thread B by at least 13 kilograms. To test this claim, 48 pieces of each type of thread were tested under similar conditions. Type A thread had an average tensile strength of 82.9 kilograms with a standard deviation of 7.12 kilograms, while type B thread had an average tensile strength of 72.1 kilograms with a standard deviation of 5.54 kilograms. Test the manufacturer's claim using a 0.10 level of significance. Do not assume that the population variances are equal. Click here to view page 1 of the table of critical values of the t-distribution Click here to view page 2 of the table of critical values of the t-distribution. OA. Ho: H1-H2=13 H₁: H1-H2 #13 B. Ho: H1-H2>13 H₁: H1-H2-13 *C. Ho. Hy - Hy = 13 H₁: H1-H2>13 OD. Ho H1 H2 <13 H₁: H1 H2 13 O E. Ho: H1-H₂ #13 H1 H1-H2-13 OF. Ho: H1-H₂ = 13 H1 H1-H2<13 Identify the critical region. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) A. t'> 1.29 OB. t'< OC. t'< ort'> Find the test statistic. (Round to two decimal places as needed.)
A manufacturer claims that the average tensile strength of thread A exceeds the average tensile strength of thread B by at least 13 kilograms. To test this claim, 48 pieces of each type of thread were tested under similar conditions. Type A thread had an average tensile strength of 82.9 kilograms with a standard deviation of 7.12 kilograms, while type B thread had an average tensile strength of 72.1 kilograms with a standard deviation of 5.54 kilograms. Test the manufacturer's claim using a 0.10 level of significance. Do not assume that the population variances are equal. Click here to view page 1 of the table of critical values of the t-distribution Click here to view page 2 of the table of critical values of the t-distribution. OA. Ho: H1-H2=13 H₁: H1-H2 #13 B. Ho: H1-H2>13 H₁: H1-H2-13 *C. Ho. Hy - Hy = 13 H₁: H1-H2>13 OD. Ho H1 H2 <13 H₁: H1 H2 13 O E. Ho: H1-H₂ #13 H1 H1-H2-13 OF. Ho: H1-H₂ = 13 H1 H1-H2<13 Identify the critical region. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) A. t'> 1.29 OB. t'< OC. t'< ort'> Find the test statistic. (Round to two decimal places as needed.)
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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