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2) In the U.S., about 8.5% of people are B+ for blood type. You take a...

2) In the U.S., about 8.5% of people are B+ for blood type. You take a sample of size 9. You’re interested in people who are B+. Figure out the following probabilities: a) Pr{Y = 3} b) Pr{Y = 1} c) Pr{Y < 1} d) Pr{Y > 0} (hint - use (c) to answer this and make sure you know why this works)
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Answer #1

The the number of people with B+ blood group out of 9 in the US follows Binomial distribution with
The PMF of Y is .

a) The probability,

b) The probability,

c) The probability,

d) The probability,

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