BASIC PROBABILITY Example: Imagine that you have boarded an airplane. The rows a

Question

BASIC PROBABILITY Example: Imagine that you have boarded an airplane. The rows are numbered from 1 to 30, and there are six seats per row, three on each side of the isle. Seats in each row are labeled A through F. For this example, assume that seats are randomly assigned. a. How many seats are in the airplane? b. What are your chances of sitting in row number 7? c. What are your chances of sitting in a window seat? d. What are your chances of sitting in an "A" seat? e. What are your chances of sitting in an even- numbered row?

Explanation / Answer

a. Number of seats available = 30 * 6 = 180

b. chances of sitting in row number 7 = 1/ number of rows = 1/30

c. There are two widow seat out of the 6 seats per row.

So, Pr(Window seat) = 2/6 = 1/3

d. Here there are 30 A seats total as each row have one 'A' seat.

Pr(A seat) = 1/6

e. Out of 30 rows, there are 15 rows that are even

so, Pr(sitting in even number of row) = 15/30 = 1/2 = 0.5

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