Problem Number of Trucks Prob 0 040 1 030 2 020 3 008 4 002

Problem

Number of Trucks          Prob

          0                        0.40

          1                        0.30

          2                        0.20

          3                        0.08

          4                        0.02

a) {Hobby Shop Saless Narrative} What is the probability of selling at least two trucks in any given week?

b) {Hobby Shop Sales Narrative} What is the probability of selling between 1 and 3 (inclusive) trucks in any given week?

Solution

a)The probability of selling at least two trucks in any given week is:

0.20+0.08+0.02=0.3

b)The probability of selling between 1 and 3 (inclusive) trucks in any given week is:

0.30+0.20+0.08=0.58