blood Group and Types If 2 of the 100 subjects are randomly selected, find thepr

Question

blood Group and Types If 2 of the 100 subjects are randomly selected, find theprobability that they are both group o and type Rh+ a. Assume that the selections are made with replacement b. Assume that the selections are made withoutreplacement                      Group O A      B  AB   TypeRh+                3935    8      4           Rh-                 6     5  2      1   blood Group and Types If 2 of the 100 subjects are randomly selected, find theprobability that they are both group o and type Rh+ a. Assume that the selections are made with replacement b. Assume that the selections are made withoutreplacement                      Group O A      B  AB   TypeRh+                3935    8      4           Rh-                 6     5  2      1  

Explanation / Answer

Group O A      B  AB Total

  TypeRh+                3935    8      4  86

          Rh-                 6     5  2     1   14

Total                       45      40 10   5 100

Probability for with replacement:

Prob(group 0 and type Rh+)=prob(select 2 fromgroup0)+prob(select 2 from type Rh+)-Prob(select 2 from group 0Union type Rh+)

Here total

(45C2+86C2-39C2)/100C2=0.788687

Probability for without replacement.

(45P2+86P2-39P2)/100P2=0.788687

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