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14. {2/6 Points] I DETAILS I I PREVIOUS ANSWERS I YMSSTAT212.E.027. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A sample survey by Nielsen Media Research looked at computer access and use of the Internet. Whites were signicantly more likely than blacks to own a home computer, but the blackwhite difference in computer access at work was not signicant. The study team then looked separately at the households with at least $40,000 income. The sample contained 1943 white and 125 black households in this class. Here are the sample counts for these households. Blacks Whites Own home computer 86 1178 Computer access at work 101 1134 (a) Do higher-income blacks and whites differ signicantly at the 5% level in the proportion who own home computers? Z = Pvalue = Conclusion ff There is signicant evidence that the proportion of higherincome blacks and whites that own home computers differs. 3' There is no evidence that the propertion of higherincome blacks and whites that own home computers differs. I (b) Do they differ signicantly at the 5% level in the proportion who have computer access at work? 2 = P-value = Conclusion 3' There is signicant evidence that the proportion of higherincome blacks and whites that have computer access at work differs. ff There is no evidence that the proportion of higherincome blacks and whites that have computer access at work differs. v