3 See if 21 22 s1 22 n1 19 s2 36 n2 26 05SolutionH0 va

3. See if ²₁ = ²₂ . s₁ = 2.2, n₁ =19, s₂ = 3.6 n₂ = 26. = .05

Solution

H0: var 1 = var 2

Ha: var 1 not equal to var 2

Two tailed F test for comparison of variances

F statistic = s1^2/s2^2 = 0.3735

df = 18, 25

The P value equals 0.9825
   By conventional criteria, this difference is considered to be not statistically significant.

Hence accept null hypothesis