Test of Independence · Exercise 19

A recent debate about where in the United States skiers believe the skiing is best prompted the following survey. Test to see if the best ski area is independent of the level of the skier.

$$\begin{array}{cccc}\text{U.S. ski area}& \text{Beginner}& \text{Intermediate}& \text{Advanced}\\ \text{Tahoe}& \text{20}& \text{30}& \text{40}\\ \text{Utah}& \text{10}& \text{30}& \text{60}\\ \text{Colorado}& \text{10}& \text{40}& \text{50}\end{array}$$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Introductory Business Statistics 2e · §11.4 Test of Independence · Exercise 19