Suppose two independent random samples of sizes n1 9
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?
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