A new survey found that out of a random sample of 300 high school students throughout the country who had previously signed up to take the AP Statistics exam, 83% of them still planned on taking the adjusted version. Construct and interpret a 95% confidence interval for the true proportion of all students who still plan on taking their AP Stats exam. Explain what 95% confidence means in the context of this question. The AP exam believes that more than 86% of students will still be taking the exam. What can you say about their claim based on your interval in part (a)?

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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.