Question

A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 95% confidence if

A.) She uses a previous estimate of 0.32? (Round up to the nearest integer).

B.) She does not use any prior estimates? (Round up to the nearest integer).

Answer 1

Answer:

Given that:

A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 95% confidence

A.) She uses a previous estimate of 0.32?

  

  

  

B.) She does not use any prior estimates?

When no any primary estimate used, = 0.5