A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 15 kilograms with a standard deviation of 1.2 kilograms. The company wishes to test the hypothesis, Ho: u= 15 H: u<15 Using a random sample of four specimens. Suppose the random sample is from a normal population. What is the type I error probability, if the critical region is defined as < 13.5 kilograms? (Sonuç virgülden sonra 4 basamak olarak verilecektir.)

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A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread
elongation of 15 kilograms with a standard deviation of 1.2 kilograms. The company wishes to test the
hypothesis,
Ho: u= 15
H : u < 15
Using a random sample of four specimens. Suppose the random sample is from a normal population.
What is the type I error probability, if the critical region is defined as X< 13.5 kilograms? (Sonuç virgülden
sonra 4 basamak olarak verilecektir.)
Transcribed Image Text:A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 15 kilograms with a standard deviation of 1.2 kilograms. The company wishes to test the hypothesis, Ho: u= 15 H : u < 15 Using a random sample of four specimens. Suppose the random sample is from a normal population. What is the type I error probability, if the critical region is defined as X< 13.5 kilograms? (Sonuç virgülden sonra 4 basamak olarak verilecektir.)
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