according to the information please almanac, 78% of adult smokers started smoking before turning 18 years old. suppose 8 smokers 18 years old or older are randomly selected and the number of smokers who started smoking before 18 is recorded. use the cumulative probabilities found in part c to answer parts d-g. round answers to 4 decimal places. a. (2pts) what is the mean of the number of smokers who started smoking before 18 years of age for a sample of 8 smokers? (round to one decimal place.)