Answer:
The thickness of the pile is [tex]2\frac{1}{4} in.[/tex] or 2.25 inches thick
Step-by-step explanation:
Here we have from the line plot, the four thinnest books given by;
Two books of 1/2 inch thickness and two books 5/8 inch thickness
Therefore when the two 1/2 inch thick books are piled on top of the to 5/8 inch thick books we have the total thickness of the pile given as follows;
[tex]2\times \frac{1}{2} in. + 2\times \frac{5}{8} in.= \frac{9}{4} in. = 2\frac{1}{4} in.[/tex]
The thickness of the pile =[tex]2\frac{1}{4} in.[/tex]