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02-01-2023
Mathematics

Answered

A textile fiber manufacturer is investigating a new drapery yarn which the company claims have a mean thread elongation of 12kg with standard deviation of 0.5kg. The company wishes to test H0 : μ = 12 against H1 : μ < 12 using a random sample of 4 specimens.
What is the type I error probability if the critical region is defined as x < 11.5?

Answer :

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