A bag of 120 tulip bulbs contain 63 red tulip bulbs, 32 yellow tulip bulbs and 25 purple tulip bulbs. A.) What is the probability that a random selected tulip is yellow? B.) What is the probability that a randomly selected tulip is not purple? C.) Would it be considered unusual to get a purple bulb?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.