Out of a sample of 500 highschool students, 376 said they would prefer to have computers in every classroom.? A. CI=(72.02$,78.38%)
B. CI=(71.98%,79.45%)
C. CI=(71.41%,78.99%)
D. CI=(70.23%,80.17%)

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?