Nthe last quarter of 2007, a group of 64 mutual funds had a mean return of 5.9% with a standard deviation of 6.2%. if a normal model can be used to model them, what percent of the funds would you expect to be in each region? use the 68-95-99.7 rule to approximate the probabilities rather than using technology to find the values more precisely. be sure to draw a picture first.

1. are the triangles similar and if so why? what is the value of x? show your work.

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

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?