Answer all please asap! : There are 210 students in a twelfth grade high
school class. 90 of these students have at least one
sister and 105 have at least one brother. Out of
these, there are 45 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(B | A), the conditional probability
that the student has a brother given that he or
she has a sister?
Is P(B | A) = P(B)? Are the events A and B
independent?
Choose all answers that apply:
a. yes P(B|A) = P(B)
b. no P(B|A) does not = P(B)
C. yes, events A and B are independant
D. No, events A and B are not independant
Will Vote brainliest