we have data with a notmal distribution the sample average was 0.0629, the sample standard deviation was 0.00032 we want to know what percantage of prt fall between 0.0623 amd 0.0631
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we have data with a notmal distribution the sample average was 0.0629, the sample standard deviation was 0.00032 we want to know what percantage of prt fall between 0.0623 amd 0.0631
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- Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 146 minutes with a standard deviation of 16 minutesConsider 49 of the races Find the probabillity that the average of the sample will be between 144 and 146 min in the 49 marathons B find the 80th percentile for the average of these 49 marathons C find the medianents • Question 6 ons The U.S. Census Bureau reported that the mean area of U.S. homes built in 2012 was 2505 square feet. A simple random sample of 26 homes built in 2013 had a mean area of 2711 square feet with a standard deviation of 212 feet. Can you conclude that the mean area of homes built in 2013 is greater than the mean area of homes built in 2012? It has been confirmed that home sizes followa normal distribution. Use a 10% significance level. Round to the fourth Hn: Select an answerv Select an answerv Course ons HA: Select an answerv Select an answerv Test Statistic: P-value: Did something significant happen? Select an answer Select the Decision Rule: Select an answer There Select an answerv enough evidence to conclude Select an answer Question Help: O Message instructor Submit Question 用 hp Ce #3 9% & 3 4. 6. 7 8. W d. 0. O 2A %23 %24Just the incorrect answers please
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