The American Red Cross says that about 45% of the U. S. population has Type O blood, 40% Type A, 11%Type B, and the rest Type AB.1.a)Someone volunteers to give blood. What is the probability that this donor1.has Type AB blood?2.has Type A or Type B?3.is not Type O?2.b)Among four potential donors, what is the probability that1.all are Type O?2.no one is Type AB?3.they are not all Type A?4.at least one person is Type B?

Part A

1.

2.

3.

Part B

1.

2.

3.

4.

Explanation:

Given ,

Percentage of American with blood group O - %

Percentage of American with blood group A - %

Percentage of American with blood group B - %

Percentage of American with blood group AB - %

Part A

Probability that donor

1.has Type AB blood

2.has Type A or Type B

3.is not Type O?

Probability of type (O)

Part B

1. Type O?

2.no one is Type AB?

3.they are not all Type A?

4.at least one person is Type B?

there is no

explanation:

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b