Directions: Answer each question to the best of your ability. Show your work. No points will be given for answers only. You can use your calculator and pen/pencil. 1. The following table lists the probability distribution of the number of blood pressure monitors sold per day in a local pharmacy. 0 1 2 3 P(x) 0.1 0.4 ? 0.2 a) Find the value of the missing probability? b) Find the probability P(x 2 1) to the nearest tenth. c) Calculate the mean, variance and standard deviation of this probability distribution. x P(x) x*P(x) x2 P(x)