To better track its patients a hospitals neighborhood medica

To better track its patients, a hospital\'s neighborhood medical center has gathered this information.

New patient (N)

Existing patient (E)

Scheduled appointment (A)

10

10

Walk-in (W)

12

18

What is the probability that patient is new or a walk-in?   

0.8400

0.8000

0.9400

0.2400

Solution

Totally, we have 10 + 12 = 22 new patients

Total walk-in but not new = 18

So, total new or walk-in = 40

P(new or walk-in) = 40 / (10 + 10 + 12 + 18) --> 40 / 50 --> 0.8

Answer --> 0.8