TABLE 2-14 Given Below Is the Stem-And-Leaf Display Representing the Amount of Amount

Short Answer

TABLE 2-14
Given below is the stem-and-leaf display representing the amount of detergent used in gallons (with leaves in 10ths of gallons) in a month by 25 drive-through car wash operations in Phoenix.

-Referring to Table 2-14, if a relative frequency or percentage distribution for the detergent data is constructed, using "9.0 but less than 10.0 gallons" as the first class, what percentage of drive-through car wash operations use at least 10 gallons of detergent in a month?