There are 300 students in a twelfth grade high school class 120 of these students...
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Algebra
There are 300 students in a twelfth grade high school class 120 of these students have at least one sister and 100 have at least one brother Out o the students that have at least one brother there are 40 who have at least one sister and one brother Let A be the event that a randomly selected student in the class has a sister and B be the event that the student has a brother Based on this information answer the following questions What is P A the probability that the student has a sister What is P B the probability that the student has a brother What is P A and B the probability that the student has a sister and a brother What is P AB the conditional probability that the student has a sister given that he or she has a brother Is P A B P A Are the events A and B independent Choose all answers that apply Yes P A B P A No P AB P A Yes events A and B are independent events No events A and B are not independent events
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