Internet use poll A Pew Research poll in April 2009 froma random sample of U.S. adults asked the questions “Didyou use the Internet yesterday?” and “Are you White,Black, or Hispanic/Other?” Is the response to the questionabout the Internet independent of race? a) Under the null hypothesis, what are the expected values?b) Compute the x2statistic. c) How many degrees of freedom does it have?d) Find the P-value. e) What do you conclude? Did You Use theInternet Yesterday?Yes NoEthnicityWhite 2546 856Black 314 146Hispanic/Other 431 174

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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.