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The table shows the number of cities in a region of the U.S. that are served by the given number of airlines. Use the table for Exercises $21-22$ .What is the probability that a city chosen at random is served by exactly 4 airlines?$$\begin{array}{llll}{\text { A. } \frac{1}{18}} & {\text { B. } \frac{4}{21}} & {\text { C. } \frac{2}{11}} & {\text { D. } \frac{2}{9}}\end{array}$$

$\frac{2}{11}$

Precalculus

Geometry

Intro Stats / AP Statistics

Chapter 12

Probability And Statistics

Section 1

Probability Distributions

Introduction to Combinatorics and Probability

Probability

Graphs and Statistics

Descriptive Statistics

Probability Topics

Cairn University

Oregon State University

University of Michigan - Ann Arbor

Utica College

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So we want to use that table to find the probability that a city change in at random is served by exactly four airlines. So the first thing you have to do is find the total of the right hand column. So the total is 99 and then four said 18 number of cities, so 18 over 99 would reduce to two over 11 and that answer then would be C.

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