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The following statistics were calculated from two random samples taken from two populations following a normal...

The following statistics were calculated from two random samples taken from two populations following a normal distribution: S1^2=350, n1=30, S2^2=700, n2=30

1. Can you infer that the two parent variances are different at a 5% significance level?

2. If the number of samples is n1 = 15 and n2 = 15, repeat question 1.

3. Describe what happens to the test statistic when the number of samples decreases.

Math   Statistics-And-Probability   
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