1. A tire manufacturer advertises, "the median life of our new all-season radial tire is 50,000 miles. An immediate adjustment will be made on any tire that does not last 50,000 miles." You purchased five of these tires. What is the probability that all five tires will wear out before traveling 50,000 miles? 1/64 or 0.015625 1/8 or 0.125 1/32 or 0.03125 1/4 or 0.25

2.

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, 2, 5, 6, 9, or 11 days last month.

Number of days absent	Probability
0	0.48
2	0.22
5	0.14
6	0.08
9	0.08
11	0

What is the variance of the number of days absent?

7.26 4.13 16.53 8.26