Question

The probability distribution histogram shows the age distribution of giraffes at a zoo. What is P(8 *less than *x *less than or equal to* 20)
here is the histogram

https://static.k12.com/nextgen_media/assets/8124911-NP057_290.png

Answer 1

There are four gray rectangles in the graph, showing 2 different probabilities.  Add together the areas of the two rectangles located on the right side:

0.35+0.05 = 0.40 (answer)