A textile fiber manufacturer is investigating a new drapery yan, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. The company wishes to test the hypothesis using a random sample of four specimens. Identify the appropriate hypotheses test. O a. Test on Mean, Variance Known O b. Test on Variance and Standard Deviation O. Test on Mean, Variance Unknown O d. Test on Population Proportion

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A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a
mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. The company
wishes to test the hypothesis using a random sample of four specimens.
Identify the appropriate hypotheses test.
O a. Test on Mean, Variance Known
O b. Test on Variance and Standard Deviation
OC. Test on Mean, Variance Unknown
O d. Test on Population Proportion
Transcribed Image Text:A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. The company wishes to test the hypothesis using a random sample of four specimens. Identify the appropriate hypotheses test. O a. Test on Mean, Variance Known O b. Test on Variance and Standard Deviation OC. Test on Mean, Variance Unknown O d. Test on Population Proportion
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