The random variable x is the number of occurrences of an event ...

[Mimi]

The random variable x is the number of occurrences of an event over an interval of 10 minutes. It can be assumed the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences in 10 minutes is 5.3 . The probability there are less than 3 occurrences is _____.
 a. .0659
  b. .0948
  c. .1016
  d. .1239

Question 2

The random variable x is the number of occurrences of an event over an interval of 10 minutes. It can be assumed the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences in 10 minutes is 5.3 . The probability there are 8 occurrences in 10 minutes is _____.
 a. .0241
  b. .0771
  c. .1126
  d. .9107

[Kingjoffery]

Answer to Question 1

c

Answer to Question 2

b