Find for me and explain the given probabilities from a distribution in Excel using a call function

a. The number of drivers out sick on any given day, in a large logistics firm is Poisson distributed with a mean of 11. What is the probability that more than 15 drivers are out sick?

b. Given an integer uniform distribution with low of 10 and high of 50, what is the probability that a value drawn will be between 20 and 30, inclusive?

c. The time to complete a software project is normally distributed with a mean of 8.5 months and a standard deviation of 1.6 months. What is the probability of completion within a year?

d. The time between 2 consecutive customers is exponentially distributed with a mean of 55 seconds.What is the probability that two customers will arrive less than 20 seconds apart?

e. The probability that an individual student will fail the class is 0.8%, i.e., 0.008. What is the probability that in a class of 35 students, there are 2 Fs?