statistics
posted by Anonymous .
Prospective Cohort Study
The following tables show the crude and sexspecific results from a Prospective Cohort Study that examines the association between a binary exposure (E) and the development of a disease (D) during 20 years of followup.
Full Data:
SexSpecific Data:
Males
1. Assume that this cohort is a simple random sample from a broader population of interest. Model the number of disease positive individuals among all exposed individuals in the sample using the binomial distribution with probability of disease ; and model the number of disease positive individuals among the unexposed in the sample using a binomial distribution, with probability of disease . Estimate , the proportion of exposed individuals who are disease positive, and provide an exact 95% confidence interval.
Estimated Proportion:
unanswered
Confidence Interval:
Lower Bound:
unanswered
Upper Bound:

Use these data to solve the above problem, it will become easier
Full data
D+ D Total
E+ 30 270 300
E 20 180 200
Total 50 450 500
Male
D+ D Total
E+ 12 108 120
E 8 72 80
Total 20 180 200
Female
D+ D Total
E+ 18 162 180
E 12 108 120
Total 30 270 300 
1. 2.5

Please do not answer these questions, It is not a help. It is challenge for a new education system, I think this should be immediately stopped to cheer at least those who are working hard to learn

these numbers are wrong. did you change the numbers???
where are you getting this data??? 
please help, today is the last date to attempt for this

How do you find confidence interval for the first one(first part)?

i have first part. If u have a second, wy can exchange.