More than a decade ago, high levels of lead in the blood put 86% of children at risk. A concerted effort was made to remove lead from the environment. Now, suppose only 16% of children in the United States are at risk of high blood-lead levels. A button hyperlink to the SALT program that reads: Use SALT. (a) In a random sample of 180 children taken more than a decade ago, what is the probability that 50 or more had high blood-lead levels