Question

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 against using a random sample of specimens. Calculate the P-value if the observed statistic is________.

Answer 1

P-value= 0.028834

Explanation:

The test statistic value is: 11.25 12 -3 0.5

Since this is a left tailed test, so the p-value is given by:

P(t-1 3 P(t3<-3)=P(t3 > 3) = 0.028834

Please see the see attachment .