8) Express the confidence interval (.437 , .529) in the form of pˆ±E (show the sample proportion and Margin of Error). 9) In a research center poll, 73 % of of 3011 adults surveyed said they use the in- ternet. Construct a 95% confidence interval estimate of the proportion of all adults who use the internet. Is it correct for a reporter to write that 3/4 adults use the internet? Why or why not? 10) Express the interval (19.853, 22.7) in the form of x̄ ± E (show the sample mean and Margin of Error) and in the form x̄ − E < μ < x̄ + E.

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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.