Assume a sample of size n = 12 has been collected.To perform a hypothesis test of a population variance using a 0.05 level of significance,where the null hypothesis is:
H₀: σ² = 25
The upper tail critical value is 21.92.

Question

Quizplus · Accepted Answer

Since the null hypothesis is about the population variance, the appropriate test statistic is the chi-squared distribution. At a 0.05 level of significance and 11 degrees of freedom (n-1), the upper tail critical value from a chi-squared table is 21.92. Therefore, the statement is true that the upper tail critical value is 21.92.

Assume a Sample of Size N = 12 Has Been