Write a verbal expression for x +
o a) the quotient of x and y
ob) the product of x and y
12
o
c) the difference of x and y
15
od the sum of x and y

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?