This is a straight hypergeometric distribution question.

The answer is _{5}C_{1}*_{7}C_{2} / _{12}C_{3} where the C's are the binomial coefficients.

Paul M.

05/12/21

Lia K.

asked • 05/11/211.Q;In a class there are five girls and seven boys. For a school project

the teacher would like to form a group of three students.

What are the chances that there will be at least one female in the group?

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This is a straight hypergeometric distribution question.

The answer is _{5}C_{1}*_{7}C_{2} / _{12}C_{3} where the C's are the binomial coefficients.

Paul M.

tutor

Of course, Doug C. is correct.
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05/12/21

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Doug C.

Except that it is for "at least" one female, so there could also be 2 or 3. Easier to take the complement of "no females"?05/12/21