Question

Joe can safely receive blood transformations frompeople with blood types O and B. What is theprobability that a randomly chosen black Americancan donate blood to Joe?

Answer 1

0.69

Step-by-step explanation

The probability of an event is the number of favorable outcomes divided by the total number of outcomes possible

Step 1

Let

probability of b O = 0.49 = 49%

probability of b A = 0.27 = 27%

probability of b B = 0.20 = 20%

probability of b AB = 0.04 = 4%

Step 2

Joe can safely receive blood transformations from

people with blood types O and B

it is 49%+20%=69%

then, favorable out come is 69

total number of out comes = 100

or

`(69)/(100)=0.69`