Math help

would like to know how to do it step by step and answer

0.01085 ~ 1.085%

Step-by-step explanation:

Okay so a simple way to do these probability ones is to add an extra space around each side

                      YES          NO

POSITIVE       325           2        

NEGATIVE       16          1131      

Now in these spaces add all the the rows and columns accordingly

                      YES          NO

POSITIVE       325           2        _327_

NEGATIVE       16          1131      _1147_

                     _341_     _1133_   _1474_

Now the number in the place where the additional rows meet is your total number of patients, so this is what you would use for your probability.

So we are looking for YES / NEGATIVE which is 16

Now do 16 divided by 1474 and your probability comes out to 0.01085..., so as a percentage, would be 1.085%

Hope that helped :)