Suppose that 2% of the students in a school have head lice and the test for head lice is accurate 75% of the time. What is the probability that a student in the school has head lice, given that the test came back positive? Round your answer to the nearest tenth of a percent.
Accepted Solution
A:
To answer this you will find what 75% of the 2% of the student is. To calculate this, you will multiply 75% (0.75) and 2% (0.02). The answer is 0.015 which rounds to 0.02 chance. As a percent it is a 1.5% probability.