# In the following problem check that it is appropriate to use

Last updated: 2/1/2024

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