200 elementary school students were surveyed to find their blood groups. Of those, 55 were of blood group A, 85 of blood group B

Question

2 years ago

5

200 elementary school students were surveyed to find their blood groups. Of those, 55 were of blood group A, 85 of blood group B

, and 21 of blood group O. What is the probability that a randomly chosen student has either blood group A or blood group B? A) 0.25 Eliminate B) 0.60 C) 0.70 D) 0.81

Mathematics

2 answers:

gizmo_the_mogwai [7] · Answer 1 · 2022-04-05T05:48:00+03:00

gizmo_the_mogwai [7]2 years ago

8 0

Answer:

P(A or B) = P(A) + P(B) =

55

200

+

85

200

= 0.70

Step-by-step explanation:

C is correct

MA_775_DIABLO [31] · Answer 2 · 2022-04-05T03:27:00+03:00

MA_775_DIABLO [31]2 years ago

7 0

The answer would be c for sure