Let x represent the number of times a customer visits a grocery store in a one week period.
Assume this is the probability distribution of x:
x 0 1 2 3
p(X) 0.1 0.4 0.4 0.1

Find the expected value of x, the average number of times a customer visits the store.

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?