SOLUTION: 1. Each child born to a particular set of parents has a probability of 0.25 of having
blood type O. If these parents have 5 children. What is the probability that?
a. Exactly th
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Question 1200399: 1. Each child born to a particular set of parents has a probability of 0.25 of having
blood type O. If these parents have 5 children. What is the probability that?
a. Exactly three of them have blood type O.
b. At most 2 have blood type O
c. At least 4 have no blood type O
d. The fifth child have blood type O
e. Compute the mean and variance of this probability distribution
f. Draw the probability distribution table
Answer by Solver92311(821) (Show Source): You can put this solution on YOUR website!
The probability of exactly
successes in
independent trials with a uniform probability of success on any given trial of
is given by:
where
is the number of combinations of
things taken
at a time.
The probability of at least
successes in
independent trials with a uniform probability of success on any given trial of
is given by the sum:
Which is the probability of exactly
successes plus the probability of exactly
and so on up to the probability of exactly n successes.
Just plug in your numbers, remembering to express the probability as a decimal, and do the indicated arithmetic.
It may save you some arithmetic if you recognize that
The mean of the binomial distribution is
, and the variance of the binomial distribution is
The distribution table would be the the list of results for
for
zero through five.
John

My calculator said it, I believe it, that settles it
From
I > Ø
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