A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month.

Picture

col1# of days absent 0 1 2 3 4 5
col2Probability 0.60 0.20 0.12 0.04 0.04 0
What is the variance of the number of days absent?

a. 1.1616
b. 55.52
c. 5.00
d. 1.41