The following table indicates the frequency of laptops sold per day at a local Best Buy store during a particular time period. During the period, there were never any days in which more than seven laptops were sold.

Daily               Demand Frequency

0 ……………………………..            7

1 ……………………………..           11

2 …………………………….            26

3 …………………………….            13

4 ……………………………..           15

5 ……………………………..            5

6 ……………………………..            8

7 ……………………………..            5

a. What is the probability that three laptops will be sold tomorrow?

b. What is the probability that four or more laptops will be sold tomorrow?

c. What is the probability that either one or two laptops will be sold tomorrow?

d. What is the probability that less than two laptops will be sold tomorrow?

e. Is this an example of classical, empirical, or subjective probability?