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According to an almanac 80 of adult smokers started smoking before turning 18 years old...

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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 before 18 in 200 trials of the probability experiment b Interpret the mean c Would it be unusual to observe 180 smokers who started smoking before turning 18 years old in a random sample of 200 adult smokers Why a Hx D ox Round to the nearest tenth as needed b What is the correct interpretation of the mean OA It is expected that in a random sample of 200 adult smokers 160 will have started smoking after turning 18 B It is expected that in a random sample of 200 adult smokers 160 will have started smoking before turning 18 OC It is expected that in 50 of random samples of 200 adult smokers 160 will have started smoking before turning 18 c Would it be unusual to observe 180 smokers who started smoking before turning 18 years old in a random sample of 200 adult smokers A No because 180 is greater than 20 B Yes because 180 is greater than 20 O C No because 180 is less than 20 O D Yes because 180 is between 20 and 20

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