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Estimate of the population proportion

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The average age of patient's admitted to a test for a new surgery technique is 33.6 with a standard deviation of 7.670. Construct a 98% confidence interval for the mean age of the test subjects.

If a sample proportion has a confidence interval of .32 < x < .52, what's the margin of error?

If a sample mean has a confidence interval of 3.2 < x < 5.2, what's the sample mean?

How many patients must be surveyed in order to be 80% confident that the resulting estimate of the population proportion is with 3 percentage points of the actual proportion?

Reference no: EM132465230

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