Question

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 45 times and selects the ten dash dollar bill 28 times. What formula should be used to calculate the experimental​ probability? What is the experimental probability of selecting the ten dash dollar ​bill? What is the theoretical probability of selecting the ten dash dollar ​bill?

Answer 1

r / n

62.2%

33.3%

Explanation:

The formula to be used is to divide the number of times that it came out by the total number of times the event was repeated because this was the experiment that was carried out, therefore this would be the experimental formula:

r / n

r = specific event (that the 10 dollar bill comes out)

n = total events

To calculate, we know the previous values r = 28 and n = 45, we replace:

28/45 = 0.622

that is, 62.2% is the experimental probability.

To calculate the theoretical propagation, we know that there are 3 types of banknotes and we want 1 of those 3 types to appear, therefore:

1/3 = 0.333

Ie 33.3% is the theoretical probability