Navigation » List of Schools, Subjects, and Courses » Math 136 – Introduction to Statistics » Section 6.2 Homework » Section 6.2 Homework Question 6 » Section 6.2 Homework Question 6 Sample Answers
We are showing you only the excerpt of our answer. If you need help with the complete answer email us at 
Section 6.2 Homework
6.
According to an almanac,
%
of adult smokers started smoking before turning 18 years old.
(a) Compute the mean and standard deviation of the random variable X, the number of smokers who started before 18 in
trials of the probability experiment.
(b) Interpret the mean.
(c) Would it be unusual to observe
smokers who started smoking before turning 18 years old in a random sample of
adult smokers? Why?
(b) What is the correct interpretation of the mean?
- It is expected that in 50% of random samples of 200 adult smokers, 140 will have started smoking before turning 18.
- It is expected that in a random sample of 200 adult smokers, 140 will have started smoking after turning 18.
- It is expected that in a random sample of 200 adult smokers, 140 will have started smoking before turning 18.
(c) Would it be unusual to observe 160 smokers who started smoking before turning 18 years old in a random sample of 200 adult smokers?
- No, because 160 is greater than ì+2ó.
- Yes, because 160 is greater than ì+2ó.
- Yes, because 160 is between ì−2ó and ì+2ó.
- No, because 160 is less than ì−2ó.
null
This question is taken from Math 136 – Introduction to Statistics » Summer 2021 » Section 6.2 Homework