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Statistics Resources

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Statistic Questions?

In a poll of 212 prison wardens, 98 said that tattoos are a sign of trouble. Find the sample proportion who think tattoos are a sign of trouble. Using the problem above, to test the...

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Statistics Math Help

Students in a college class were asked to time how long it takes them in minutes to get ready in the morning. Here were the responses: 14, 28, 5, 12, 56, 32, 2, 17Construct a 90% confidence interval...

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Stats Help Math Problem?

If you want to find the percentage of people who are left-handed, how many people must we survey in order to be 99% confident that we are within 3 percentage points of the population percentage? Assume...

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Statistics Problem

Based on observed males using public restroom, 85% of adult males wash their hands in public. In a survey of 523 males, 518 reported they wash their hands in public restrooms. Assuming the 85% rate...

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Statistic Questions?

1. Coke cans are filled with 12 ounces of soda with a standard deviation of 0.11 oz. Find the probability that in a sample of 49 cans, the mean will be greater than 12.10 ounces (profit waste)...

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