According to an almanac, 80% 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 smoking before 18 based on a random sample of 300 adults. (b) Interpret the mean. (a) Hx = Ox= (Round to the nearest tenth as needed.). (b) What is the correct interpretation of the mean? C A. It is expected that in 50% of random samples of 300 adult smokers, 240 will have started smoking before turning 18. OB. It is expected that in a random sample of 300 adult smokers, 240 will have started smoking before turning 18. OC. It is expected that in a random sample of 300 adult smokers, 240 will have started smoking after turning 18.
According to an almanac, 80% 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 smoking before 18 based on a random sample of 300 adults. (b) Interpret the mean. (a) Hx = Ox= (Round to the nearest tenth as needed.). (b) What is the correct interpretation of the mean? C A. It is expected that in 50% of random samples of 300 adult smokers, 240 will have started smoking before turning 18. OB. It is expected that in a random sample of 300 adult smokers, 240 will have started smoking before turning 18. OC. It is expected that in a random sample of 300 adult smokers, 240 will have started smoking after turning 18.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:According to an almanac, 80% 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 smoking before 18 based on a random sample of 300 adults.
(b) Interpret the mean.
(a) Hx =
0x =
(Round to the nearest tenth as needed.)
(b) What is the correct interpretation of the mean?
A. It is expected that in 50% of random samples of 300 adult smokers, 240 will have started smoking before turning 18.
B. It is expected that in a random sample of 300 adult smokers, 240 will have started smoking before turning 18.
C. It is expected that in a random sample of 300 adult smokers, 240 will have started smoking after turning 18.
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