Asked by Obi
A group of freshmen and sophomore students was selected and each was asked whether they were a member of a student club. The following table was constructed:
Student Club No Student Club
Freshman 4 15
Sophomore 9 7
Find the probability that a randomly selected student form the group is a freshman or is a member of a student club.
Write only a number as your answer. Round to two decimal places (for example: 0.73). Do not write as a percentage.
Student Club No Student Club
Freshman 4 15
Sophomore 9 7
Find the probability that a randomly selected student form the group is a freshman or is a member of a student club.
Write only a number as your answer. Round to two decimal places (for example: 0.73). Do not write as a percentage.
Answers
Answered by
PsyDAG
Frosh = (4+15)/grand total
Member = (4+9)/grand total
Either-or probabilities are found by adding the individual probabilities.
Member = (4+9)/grand total
Either-or probabilities are found by adding the individual probabilities.
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