In a community, 40% of the population is smoker. I randomly choose 60 residents from that community and ask if each of them is a smoker.
Compute the standard deviation of sample proportion of smokers up to 3 decimal places.
Compute the mean of sample proportion of smokers.
Compute the probability that the sample proportion of smokers is less than 50%. Find the answer closest to 3 decimal places.
Compute the probability that the sample proportion of smokers is greater than 50%. Find the answer closet to 3 decimal places.