Question

In a group of 1,500 people, 585 have blood type A, 165 have blood type B, 690 have blood type O, and 60 have blood type AB. What is the probability that a person chosen at random from this group has type B blood?
P(B) = 4%

P(B) = 11%

P(B) = 39%

P(B) = 46%

Answer 1

Answer: P(B) = 11%

Step-to-step explanation:-

The total number of people in a group = 1,500

The number of people have blood type B = 165

The probability that a person chosen at random from this group has type B blood is given by :-

$\text{P(B)}=\frac{\text{favorable outcomes}}{\text{total outcomes}}\\\\\Rightarrow\text{P(B)}=\frac{165}{1500}\\\\\Rightarrow\text{P(B)}=0.11$

In percent, the  probability that a person chosen at random from this group has type B blood is given by :-

$\text{P(B)}=0.11\times100\\\\\Rightarrow\text{P(B)}=11\%$

Answer 2

The answer is B.
165/1500 = 0.11
0.11 * 100 = 11.