4. [IE pointsJ'Market-shareanaissis companyr Net Applications monitors and reports on Internet browser usage. According to Net Applications, in the summer of 212-14, Googie's Chrome browser exceeded a 20% market share for the rst time, with a 20.33% sh are of the browser market [Forbes website, December 15, 2M4}. For a randomly,r seiected group of 20 Internet browser users, answer the foliowing questions. a. Compute the probability:r that exactly 8 of the 20 Internet browser users use Chrome as their Internet browser. b. Compute the probability:' that at Least 3 of the 2D Internet browsers users use Chrome as their Internet browser. c. For the sample of 20 Internet browser users, compute the expected number of Chrome users. d. For the sample of 20 Internet browser users, compute the variance and standard deviab'on for the number of Chrome users