Please see question attached. I am on the right path and don't know how to figure out my equation. I have 1-.34 = .66

95 % confidence z 1.96

sample size should be (1.960 2 x.34x.66 ? I don't know how to divide and square 1st part. Not sure on 2nd part

_______)

.001

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 0.01 with 95% confidence if (a) she uses a previous estimate of 0.34? (b) she does not use any prior estimates? (a) n=(Round up to the nearest integer.)