Teachers A 2011 Gallup poll found that 76% of Americans believe that high achieving high school stu-dents should be recruited to become teachers. This poll was based on a random sample of 1002 Americans.a) Find a 90% confidence interval for the proportion ofAmericans who would agree with this.b) Interpret your interval in this context.c) Explain what “90% confidence” means.d) Do these data refute a pundit’s claim that 2/3 ofAmericans believe this statement? Explain.

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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.