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Statistics

Hyper-geometric distribution.

Of 25 students (14 boys and 11 girls) in the sixth-grade class at St. Andrew School, five students were absent Thursday.

a. What is the probability that two of absent students were girls?

b. What is the probability that two of absent students were boys?

c. What is the probability that all of absent students were boys?

d. What is the probability that none of absent students were boys?

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