Question

Suppose that 7% of the general population has a disease and that the test for the disease is accurate 70% of the time. What is the probability of testing positive for the disease?

Answer 1

You have a 4.9 percent chance of testing positive. Hope this helped!

Answer 2

Answer: 0.328

Explanation:

Given: The percent of general population has a disease = 7%

⇒ The percent of general population has no disease =
`100\%-7\%=93\%`

Also, The test for the disease is accurate 70% of the time.

Probability that test is accurate = 0.7

⇒ The test for the disease is not accurate 30% of the time.

Probability that test is not accurate = 0.3

Now, the probability of testing positive for the disease is given by :-

`0.07*0.7+0.93*0.3=0.328`