Chapter 12.7, Problem 1STP

For Exercises 1-5, choose the correct letter.

A letter from the word MISSISSIPPI is selected at random. What is the probability that the letter is 7?

1. $\frac{2}{11}$

B. $\frac{1}{5}$

C. $\frac{4}{11}$

D. $\frac{2}{5}$

To determine

Find the probability that the letter is I.

Answer to Problem 1STP

C

Explanation of Solution

Given:

A letter from the word MISSISSIPPI is selected at random.

Formula Used :

  $\text{P(E) = }\frac{\text{number of favourable outcomes of E}}{\text{total number of outcomes}}$

Calculation:

Number of times the letter I appears = 4

Total number of letters = 11

  $P(\text{I)=}\frac{\text{favourable outcomes}}{total\text{ number of outcomes}}=\frac{4}{11}$

So, the correct option is C.