SOLUTION: Find the indicated probability. In general, the probability that a blood donor has Type A blood is 0.40. Consider 6 randomly chosen blood donors, what is the probability that

Question 1197244: Find the indicated probability.
In general, the probability that a blood donor has Type A blood is 0.40.
Consider 6 randomly chosen blood donors, what is the probability that exactly half of them have Type A blood?

Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.


Half of 6 is 3, so they want you calculate the binomial distribution probability 
for n= 6 trials, p= 0.4 of success for each individual trial independently, k= 3 success trials

    P =  =  = 0.2765  (rounded).        ANSWER

Solved.

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To see many other similar (and different) solved problems, look into the lessons
- Simple and simplest probability problems on Binomial distribution
- Typical binomial distribution probability problems
in this site.

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