A distribution table fort he ages of men (over 18 but under 84) is shown below. (Each interval includes the left end point but not the right end).
Age in years 18-22 22-38 38-56 56-84
% in interval 20 24 30 26
a) If histogram is drawn, which is the least crowded interval?
b) If the first two intervals are combined, what is the height of the rectangle over 18-38?
c) What is the percent of 18 years or older but younger than 26?
d) What is the balance point of the histogram?