(a)n = 1037
(b) assume 87%n= 469
-express the previous estimate, 95% as a decimal
p^= 0.05
n= [2.576]^2(0.95)(1-0.95)/0.06^2= 88
(c) does the additional survey information from part (b) have much of an effect on the sample size that is required?
yes, using the additional survey information from part (b) dramatically reduces the sample size
