4. For a certain baseball league, the length of each game follows a normal distribution with a mean of 172 minutes and a standard deviation of 16 minutes. a) What is the probability that a randomly selected game will be completed in less than 200 minutes? b) What is the probability that a randomly selected game will be completed in more than 200 minutac? c) What is the completion time in which 90% of the games will be completed? 5. A fair, six-sided die is rolled 10 times. Find the probability that it lands on four at least 3 times