To establish a probability distribution, the relative frequency for each possible outcome of the variable is found by dividing the frequency of observation by the total number of observations

_____ is defined as the number of target customers who are exposed to a commercial at least once during a specific period.

Fill in the blank(s) with the appropriate word(s).

Grayville Rock and Gravel, located in a seaport town, sells rock, gravel, and sand to local markets. It has just been awarded a contract with a company 500 miles down the coast. Management should consider switching from truck to ________ transport

A) water B) rail C) pipeline D) air E) reverse