A B Of 1000 randomly selected cases of lung cancer, 800 resulted in death within 12 years. Using the point estimate of p obtained from this sample, what sample size is needed to be 95% confident that the error in estimating the true value of p is less than 0.03?
A. 484
B. 683
C. 684
Let 20.025 1.96 and 20.05 = 1.65
D. None of the other choices is correct
E. 485
