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The probability of being a universal donor is 6 O negative blood type Suppose that 12 people come to a blood drive a. What are

The probability of being a universal donor is 6 O negative blood type Suppose that 12 people come to a blood drive

a. What are the mean and standard deviation of the number of universal donors among the 12 people

b. What is the probability that there are 2 or 5 universal donors

c. What is the probability there are at least 4 universal donors

d. What is the probability there are fewer than 3 universal donors

e. What is the probability all donors are universal donors.

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