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ConfidenceIntervalPractice

ConfidenceIntervalPractice - The survey recorded the number...

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Construct 95% and 99% confidence intervals for each of the following scenarios. 1. Suppose we wish to construct a confidence interval for µ , the mean height of the population of men on a large Midwestern campus, and know that average height among men on that campus is 69 inches with a standard deviation of 3.22. Say that a sample of 10 men are taken yielding a mean of 68. Construct 95% and 99% confidence intervals for the true population mean based on the sample mean. 2. A sample survey of 180 people was conducted to estimate the fast-food market in a large city.
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Unformatted text preview: The survey recorded the number of fast-food meals eaten by each person in the previous week and yielded an average of .82 and a standard deviation of .48. 3. From a large class, a random sample of 4 grades were drawn yielding a mean of 74 and a standard deviation of 11.5. 4. A random sample of 40 cars were clocked as they passed by a checkpoint, and the average speed was 67 miles per hour with a standard deviation of 4 miles per hour....
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