Compute sample proportion with characteristic of interest

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Reference no: EM131813517

Question: In a random sample of size 2,400, 420 have the characteristic of interest.

a. Compute the sample proportion p^{^} with the characteristic of interest.

b. Verify that the sample is large enough to use it to construct a confidence interval for the population proportion.

c. Construct a 90% confidence interval for the population proportion p.

d. Construct a 99% confidence interval for the population proportion p.

e. Comment on why one interval is longer than the other.

Reference no: EM131813517

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