The survey in the previous exercise also looked at possible differences in the proportions of white and Hispanic Internet users who used social-networking sites. They found that 868 of the 1341 white Internet users and 101 of the 147 Hispanics used social-networking sites. Do we have evidence at 1% level of a difference between the proportions of white and Hispanic Internet users who use social-networking sites? (Use pw - pu for z calculations.) Pw (10.0001) = PH (10.0001)= z (40.0001)= P-value (40.0001) - O We don't have evidence that the proportions are different. O We have evidence that the proportions are different