In the following problem check that it is appropriate to use the normal approximation to the binomial Then use the normal distribution to estimate the requested probabilities Suppose more than a decade ago high levels of lead in the blood put 89 of children at risk A concerted effort was made to remove lead from the environment Now suppose only 8 of children in the United States are at risk of high blood lead levels LUSE SALT a In a random sample of 202 children taken more than a decade ago what is the probability that 50 or more had high blood lead levels Round your answer to four decimal places X You may have found the complement of the desired probability b In a random sample of 202 children taken now what is the probability that 50 or more have high blood lead levels Round your answer to four decimal places 0 0000