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categoryإحصاء schoolبكالوريوس event_available2026-07-15

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The accompanying data table includes weights (in grams) of a simple random sample of 40 quarters made before 1964 and weights of 40 quarters made after 1964. When designing coin vending machines, the standard deviations of pre-1964 quarters and post-1964 quarters must be considered. Use the Levene-Brown-Forsythe test and a 0.05 significance level to test the claim that the weights of pre-1964 quarters and the weights of post-1964 quarters are from populations with the same standard deviation. Click the icon to view the data table of pre- and post-1964 quarter weights (grams). Let the weights of pre-1964 quarters represent population 1. Let the weights of post-1964 quarters represent population 2. What are the null and alternative hypotheses? OA. Ho: 0² = 0 H₁:00 > B. H₁: 0² = 022 H₁:00 C. Ho: 02² = 0² 0²=0 H₁: 0 <0 Identify the test statistic. t= (Round to three decimal places as needed.)

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