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10% of the population has Type B blood. Find the probability that exactly 3 people in agroup of 12 random people have Type B blood.

10% of the population has Type B blood. Find the probability that exactly 3 people in agroup of 12 random people have Type B blood. Round your answer to six decimal places.

With the information given in the previous problem, find the mean and standard deviationfor the binomial probability distribution of a group of 12 people having Type B blood.

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