Mathematics, 03.12.2019 07:31 Retzzi

In a school of 1250 students, 250 are freshmen and 150 students take spanish. the probability that a student takes spanish given that he/she is a freshman is 30%. are being a freshman and taking spanish independent?
a) yes. p(s∩f) = p(s)·p(f) = 6%
b) no. p(s∩f) = 6% and p(s)·p(f) = 2.4%
c) no. p(s∩f) = 30% and p(s)·p(f) = 2.4%
d) no. p(s∩f) = 32% and p(s)·p(f) = 2.4%

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In a school of 1250 students, 250 are freshmen and 150 students take spanish. the probability that a...