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Problem1

# Problem1 - -0.0800 Average Proportion 0.8000 Z Test...

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Z Two Proportions Page 1 Gas Mileage Analysis Data Hypothesized Difference 0 Level of Significance 0.05 Group 1 Number of Successes 380 Sample Size 500 Group 2 Number of Successes 420 Sample Size 500 Intermediate Calculations Group 1 Proportion 0.7600 Group 2 Proportion 0.8400 Difference in Two Proportions

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Unformatted text preview: -0.0800 Average Proportion 0.8000 Z Test Statistic-3.1623 Two-Tail Test Lower Critical Value-1.9600 Upper Critical Value 1.9600 0.0016 Reject the null hypothesis Paul Heinrichs p-Value Original Data Page 2 63 What if example, Section 9.2.4 Page 3 53...
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