Probability using Poisson distribution.
An internal study by the Technology Services department at Lahey revealed company employees receive an average of 2 emails per hour. Assume the arrival of these emails is approximated by the Poisson distribution.
What is the likelihood Linda Lahey company president received exactly one email between 4pm and 5pm yesterday?
a. What is the possibility she received 5 or more emails during the similar period?
b. What is the possibility she did not receive any emails during the period?