Suppose two independent random samples of sizes n1 9 and n2 7 that have been taken from two normally distributed populations having variances 21 and 22 give sample variances of an s21 100 and s22 20 a Test H0 21 22 versus H0 21 22 with 05 What do you conclude b Test H0 21 22 versus H0 21 22 with 05...

Suppose two independent random samples of sizes n1 = 9 and n2 = 7 that have been

Question:

Suppose two independent random samples of sizes n1 = 9 and n2 = 7 that have been taken from two normally distributed populations having variances σ21 and σ22 give sample variances of an s21 = 100 and s22 = 20.
a. Test H0: σ21 = σ22 versus H0: σ21 ≠ σ22 with α = .05. What do you conclude?
b. Test H0: σ21 = σ22 versus H0: σ21 > σ22 with α = .05. What do you conclude?