Introduction to ANOVA: Videos & Practice Problems

A researcher wants to test whether the variance of test scores in School A is greater than that in School B at the $\alpha =0.05$ significance level. The sample variances and sizes are: $s_1^2=520,n_1=7$ for School A and $s_2^2=410,n_2=8$ for School B. Assume both populations are normally distributed and samples are independent. What is the correct decision regarding the claim ${\sigma }_1^2>{\sigma }_2^2$?