Concept explainers
To find: the probability that the student will be either an 11th grader or male.
Answer to Problem 53HP
The probability that the student will be either an 11th grader or male is
Explanation of Solution
Given information:
Two male and 2 female students from given of the 9th, 10th ,11th, and 12th grades comprise the student council, If a student Council representative is chosen at random to attend a board meeting.
Calculation:
Define the events,
Let
Since the events
Recall the probability of events that are not mutually exclusive.
If two events A and B are not mutually exclusive, then the probability that either A or B occurs is the sum of their probabilities decreased by the probability of both occurring.
Find the probability of event A.
Find the probability of event B.
Find the probability of event A and B.
Find the probability of event A or B.
Therefore, the probability that the student will be either an 11th grader or male is
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