Question

Probability help

The test to detect the presence of a liver disorder is 98% accurate for a person having the disease and 97% accurate for a person not having the disease. If in a given population, 3.5% of the people actually have the disorder, what is the probability that a randomly chosen person tests negative?

A) 0.93605
B) 0.93675
C) 0.965
D) 0.97035

Answer 1

P(test neg and test is good) + P(test neg and test is false)

Answer 2

can you fill out a table?

Answer 3

No.

Answer 4

then you might want to review your material, all a table does is organize the data, it doesnt tell you how to read and input data.

Answer 5

What type of table is that?

Answer 6

i got no idea what the name of it is, but it allows us to organize the given information so that the missing parts can be determined since the sum of row probability is equal to the sum of col probabilities; it allows us to 'see' the individual probabilities within a population.

Answer 7

The test to detect the presence of a liver disorder is

98% accurate for a person having the disease
P(d and t+) = .98

97% accurate for a person not having the disease.
P(d' and t-) = .97


If in a given population, 3.5% of the people actually have the disorder
P(d) = .035



what is the probability that a randomly chosen person tests negative?
P(d' and t-) + P(d and t-)

assuming im reading the last part correctly

Answer 8

I'm getting d.

Answer 9

if i were to fill out the table