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.† For a randomly selected group of 25 Internet browser users, answer the following questions. (Round your answers to four decimal places.) (a) Compute the probability that exactly 7 of the 25 Internet browser users use Chrome as their Internet browser. (Round your answer to four decimal places.)   (b) Compute the probability that at least 3 of the 25 Internet browser users use Chrome as their Internet browser. (Round your answer to four decimal places.)   (c) For the sample of 25 Internet browser users, compute the expected number of Chrome users.   (d) For the sample of 25 Internet browser users, compute the variance and standard deviation for the number of Chrome users. (Round your answers to four decimal places.) variancestandard deviation

According to a study, 81% of K-12 schools or districts in a country use digital content such as ebooks, audio books, and digital textbooks. Of these 81%, 6 out of 10 use digital content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum. The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is (Round to three decimal places as needed.)

A study indicates that 73% of singles have have tried online dating. You randomly sample 5 singles. Find the probability that at least 4 have tried online dating. Enter your answer as an equation or as a number rounded to 4 decimal places.

The Mighty Mouse Amusement park fills to capacity 73.1% of the time. Out of 3 randomly selected days, what is the probability that the park has at least one day filled to capacity. Round to four 4 decimals.

According to a study, 88% of K-12 schools or districts in a country use digital content such as ebooks, audio books, and digital textbooks. Of these 88%, 10 out of 20 use digital content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum. The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is (Round to three decimal places as needed.)

Gg.94.   According to Baseball Insider Magazine 25% of major league pitchers are left-handed. A recent report shows that 60% of left-handed pitcher undergo rotator cuff surgery, while 30% of right-handed pitchers undergo rotator cuff surgery. If a major league pitcher underwent rotator cuff surgery yesterday afternoon, what is the probability that this pitcher was right-handed and underwent rotator cuff surgery?