The Mean Number of Errors Per Page Made by a Member

Multiple Choice

The mean number of errors per page made by a member of the word processing pool for a large company is thought to be 1.5 with the number of errors distributed according to a Poisson distribution. If three pages are examined, what is the probability that more than 3 errors will be observed?

A) 0.6577
B) 0.6969
C) 0.7324
D) 0.7860