Question

Assume that a voltage level between 123.0 and 125.0 volts is randomly selected. what is the probability that the selested voltage level is greater than 124.0?

Answer 1

To answer this question, first let us define that probability is:

Probability = number of favorable outcomes / total number of outcomes

In this case we want to select 124.1V to 125V so:

number of favorable outcomes = 10

Since the total range is between 123.0V to 125.0V:

total number of outcomes = 20

Therefore:

Probability = 10/20

Probability = 0.50

This means that 50% of the time, the voltage will be greater than 124.0V