Determine the standard error of the sample proportion

Reference no: EM131417350

In given Example, the information given was that 3% of a nationwide randomly selected sample of n = 883 suffered from severe allergies.

a. Determine the standard error of the sample proportion in this problem.

b. Verify that the margin of error is about 1.1% for a 95% confidence interval for the percentage that suffers from severe allergies in the population represented by this sample.

Example
In the Marist Institute allergy survey, about 3% said that they experienced "severe" allergy symptoms. The sample size is n = 883, so a conservative approximation of the margin of error is 1/√883 = .034, or 3.4%.

Reference no: EM131417350

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