In a September 2013 poll conducted by the Pew Research Center, they asked a random sample of

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In a September 2013 poll conducted by the Pew Research Center, they asked a random sample of U.S. adults if they owned a smart phone. The results are shown in the following table by race.

White Black Hispanic Total Yes 2,238 382 2,992 372 Own a 1,985 292 2,577 smartphone? No 300 664 682 4,223 Total 5,569


a. What proportion in each race category owns a smartphone?
b. Does there seem to be an association between race and whether or not someone owns a smartphone?
c. Write out the null and alternative hypotheses for this study.

d. The table for these results can be found in the file Smartphone Race. Put that table in the Multiple Proportions applet (make sure you click on Use Table). What is the value of the MAD statistic?

e. Do at least 1,000 repetitions and find a p-value.

f. Based on your p-value, write a complete conclusion. Be sure to include to whom you can generalize the result.

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Introduction To Statistical Investigations

ISBN: 9781118172148

1st Edition

Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy

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