X represents the number of occurrences in the five-minute period. Supposing the number of occurrences remains constant over any two five-minute periods. The mean in five minutes is 2.9,
a.) What is the random variable?
b.) What is the expected value of the random variable?
c.) The probability of 5 occurrences in five minutes?
d) The probability there's less than 2 occurrences?