according to the nielsen company, the mean number of tv sets in a u.s. household was 2.24. assume the standard deviation is 1.3. a sample of 80 households is drawn. part: 0 / 50 of 5 parts complete part 1 of 5 (a) what is the probability that the sample mean number of tv sets is greater than 2? round your answer to at least four decimal places. the probability that the sample mean number of tv sets is greater than 2 is .