in a random sample of 500 families owning television sets in the city, it is found that 340 subscribed to HBO.

calculate :

a) the point estimate of proportion families who subscribe to HBO.

b) the 95% confidence for the actual proportion families who subscribe to HBO. interpret your answer.

c) how large a sample is required if we want to be 99% confident that our point estimate is within 0.02? interpret your answer.