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BB Levene-Brown-Forsythe Test for Comparing Variation in
Chapter 9, Problem 20BB(choose chapter or problem)
BB Levene-Brown-Forsythe Test for Comparing Variation in Two Populations Use the weights (g) of pre-1964 quarters and post-1964 quarters listed in Data Set 21 of Appendix B. Use the Levene-Brown-Forsythe test with a 0.05 significance level to test the claim that weights of pre-1964 quarters and weights of post-1964 quarters are from populations with the same standard deviation.
Questions & Answers
QUESTION:
BB Levene-Brown-Forsythe Test for Comparing Variation in Two Populations Use the weights (g) of pre-1964 quarters and post-1964 quarters listed in Data Set 21 of Appendix B. Use the Levene-Brown-Forsythe test with a 0.05 significance level to test the claim that weights of pre-1964 quarters and weights of post-1964 quarters are from populations with the same standard deviation.
ANSWER:Solution 20 BB Step 1 Here we know that from given the problem we use Levene-Brown-Forsythe test with a 0.05 significance level. Then, we want to test the claim that weights of pre-1964 quarters and weights of post-1964 quarters are from populations with the same standard deviation. Here,first sample is pre-1964 group and second sample is post-1964 group. Then hypothesis is H : = 0 1 2 H : = / 1 1 2 Where a1d are2the variance of population. We have to calculated the median from the calculator.Then the given data is Pre-1964 : median =16.1944 median = 5.6362 Post-1964: 2