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Youth SmokingTwo out of five adult smokers acquired the
Chapter 6, Problem 15E(choose chapter or problem)
Problem 15E
Youth SmokingTwo out of five adult smokers acquired the habit by age 14. If 400 smokers are randomly selected, find the probability that 170 or fewer acquired the habit by age 14.
Questions & Answers
QUESTION:
Problem 15E
Youth SmokingTwo out of five adult smokers acquired the habit by age 14. If 400 smokers are randomly selected, find the probability that 170 or fewer acquired the habit by age 14.
ANSWER:
Answer
Step 1 of 1
(a)
Two out of five adult smokers acquired the habit by age 14..
We have given 400 smokers.
We are asked to find the probability that 170 or fewer acquired the habit by age 14.
Let denote the number of person who smoke by age 14.
We need to find
Here we will use the normal approximation to the binomial approximation.