Question 5 6 pts
A phone company collects data on their customers. One set of
information the company collects is whether customers use cell phones or
land lines primarily and their ages. The results for 100 customers are
shown on the table below.
cell
land line
total
under 50
70
5
75
over 50
5
20
25
total
75
25
100
What is the joint relative frequency of cell phone customers over 50?
5%
20%
25%