In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normaldistribution to estimate the requested probabilities.More than a decade ago, high levels of lead in the blood put 83% of children at risk. A concerted effort was made toremove lead from the environment. Now, suppose only 12% of children in the United States are at risk of high blood-leadlevels.USE SALT(a) In a random sample of 186 children taken more than a decade ago, what is the probability that 50 or more hadhigh blood-lead levels? (Round your answer to three decimal places.)(b) In a random sample of 186 children taken now, what is the probability that 50 or more have high blood-leadlevels? (Round your answer to three decimal places.)

a) n=186 More than a decade ago, high levels of lead in the blood put 83% of children at risk. Let X…

Answered: (a) In a random sample of 186 children…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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