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Market-share-analysis company Net Applications monitors and reports on Internet browser usage. According to Net Applications, in the summer of 2014, Google's Chrome browser exceeded a
Market-share-analysis company Net Applications monitors and reports on Internet browser usage. According to Net Applications, in the summer of 2014, Google's Chrome browser exceeded a 20% market share for the first time, with a 20.37% share of the browser market (Forbes website, December 15, 2014). For a randomly selected group 20 Internet browser users, answer the following questions. a. Compute the probability that exactly 8 of the 20 Internet browser users use Chrome as their Internet browser (to 4 decimals). For this question, if you compute the probability manually, make sure to carry at least six decimal digits in your calculations. .2037 A university found that 20% of its students withdraw without completing the introductory statistics course. Assum that 20 students registered for the course. a. Compute the probability that 2 or fewer will withdraw (to 4 decimals). .9728 x b. Compute the probability that exactly 4 will withdraw (to 4 decimals). .0016 c. Compute the probability that more than 3 will withdraw (to 4 decimals). .0016 d. Compute the expected number of withdrawals
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