Suppose that 4.5% of the people in the world have a particular genetic defect and that a screening test is 81% accurate for people who have it and 88% accurate for people who do not.. if 1300 people are screened for the defect, which is the best prediction for the number of people with the defect who are identified as not having it? . a. 11. b. 16. c. 48. d. 59. explain too! i don't get !

Most of the information's required for answering this question is already given.
Percentage of people in the world having genetic defects = 4.5%
Total number of people screened = 1300
Number of people having defect = 1300 * (4.5/100)
                                                    = 58.5 
The number of people having the defect
but diagnosed wrongly not to have it = 58.5 * (19/100)
                                                           = 11
From the above deduction, we can conclude that the correct option among all the options that are given in the question is the first option or option "a". I hope that the procedure is clear enough for you to understand.

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2