Question

sample of 45 bottles of soft drink showed a variance of 1.1 in their contents. The process engineer wants to determine whether or not the standard deviation of the population is significantly different from 0.9 ounces. Using a significance level of 0.01, what are the critical values of the test

Answer 1

Answer:

The correct solution is "23.58 and 71.89".

Step-by-step explanation:

Given:

Sample,

n = 45

df = 45 - 1

   = 44

then,

⇒ $X_R^2 = X_{\frac{\alpha}{2},df }^2$

          $=71.89$

or,

⇒ $X_L^2 = X_{1-\frac{\alpha}{2}, df }^2$

         $=23.58$