Identify the means and the extremes in each of the following proportions.
a. 4: 24 = 2: 12
b. 24/6 = 16/4
c. 4: 8 = 8: 16
d. 6/50 = 3/25

Volume of a cylinder with a radius of 13 in and height of 30 in

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.