A television station wants to know how its newest show is performing. The results of their poll of high school students is shown. Viewership by Grade Grades 9-10 Grades 11-12 Watch 8 Don't Watch 7 16 What is the probability of selec a student who watches the show or who is in grades 9-10? O 0.38 0.43 0.60 0.20

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.