Think About the Process A student has a one-dollar bill, a five-dollar bill, and a ten-dollar bill in a

box. The student selects a bill from the box 47 times and selects the five-dollar bill 21 times. What

formula should be used to calculate the experimental probability? What is the experimental probability

of selecting the five-dollar bill? What is the theoretical probability of selecting the five-dollar bill

The formula to calculate the experimental probability is "P (event) = Number of times event occurs/total number of trials"

The expiramental probability should be the fraction "21/47"

The theoretical probability should be the fraction "1/3" because the formula for theoretical probability is the number of favorable outcomes (5 dollar bill) over the total number of possible outcomes (10-dollar bill, one dollar bill, & 5 dollar bill). therefore, there is 1 favorable outcome, and 3 possible outcomes = 1/3.