15. Max is planting fruit trees with 18 trees in each row. If he wants to have at most 342 trees, which inequality could he used to determine the number of rows (1) he
should plant?
A
I 프
18
B. 18r < 342
C. r - 18 > 342
D. r < 18(342)
> 342

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?