According to an almanac 60 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 100 trials of the probability experiment b Interpret the mean c Would it be unusual to observe 90 smokers who started smoking before turning 18 years old in a random sample of 100 adult smokers Why a Hx x 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 100 adult smokers 60 will have started smoking before turning 18 OB It is expected that in 50 of random samples of 100 adult smokers 60 will have started smoking before turning 18 OC It is expected that in a random sample of 100 adult smokers 60 will have started smoking after turning 18 c Would it be unusual to observe 90 smokers who started smoking before turning 18 years old in a random sample of 100 adult smokers OA Yes because 90 is greater than 20 OB No because 90 is less than 20 OC No because 90 is between 20 and 20 OD Yes because 90 is between 20 and 20 OE No because 90 is greater than 20