The number of tickets purchased by a customer for a musical performance at a certain concert hall can be considered a random variable. The table below shows the relative frequency distribution for the number of tickets purchased by a customer.
Number of tickets purchased
4 5
Relative frequency 0.20
0.05
Suppose each ticket for a certain musical performance cost $12. Based on the distribution shown, what is the mean cost per customer for the performance?
5245
2
0.45
3
0.10
0.20
$275
$24.50
D
$29.40
$36.00