A survey of all beings on planet Dubble found that 12 beings preferred gespil juice to all other juices. If 40 were surveyed altogether, what percent of them preferred gespil juice?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

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?