12

siding: Five teenagers are selected at random. Let X be the number of them who have sent text messages on their cell phones within the past 30 days. cording to a study by the Nielsen Company, the probability distribution of)! is as follows: I'D 1 2 3 4 5 P (I) '0.016 0.099 0.265 0.313 0.237 0.070 sexuammma (a) Compute the mean F'X' Round the answer to at least two decimal places. \"=5