Suppose that a particular pattern of responses on a personality test is characteristic of 95 percent of people with some rare psychological disorder (occurring in 1 percent or less of the population),and 5 percent of normal people.If we use the test result to identify whether or not someone has the disorder,how often will we be correct?

Question

Suppose that a particular pattern of responses on a personality test is characteristic of 95 percent of people with some rare psychological disorder (occurring in 1 percent or less of the population),and 5 percent of normal people.If we use the test result to identify whether or not someone has the disorder,how often will we be correct?​

Quizplus · Accepted Answer

Given the rarity of the disorder (1% or less) and the fact that 5% of normal people (who make up the vast majority of the population) would also test positive, most positive test results will be false positives. This means the accuracy of the test in correctly identifying those with the disorder will be less than 50%.

Suppose That a Particular Pattern of Responses on a Personality