(i)Suppose 10% of the population of a city said they agreed with a new speed limit. In a poll of 400 randomly chosen people from that city, what is the probability that fewer than 7.5% of them will say they agree with the new speed limit?

(ii)Suppose that X is a normal random variable with unknown mean and variance of 4, if Pr[X>20] = .1056, what is the mean?