Mathematics
Mathematics, 21.12.2019 03:31, martinezarielys17

Suppose at a large university, 60% of the students have a visa card and 40% of the students have a mastercard. also, 30% of the students neither have 1 a visa card, nor have a mastercard. randomly select a student from the university. given that this student has a visa card, what is the probability that this student also has a mastercard1. calculate the probability that this student does not have a mastercard. 2. calculate the probability that this student has either a visa card or a mastercard. 3. calculate the probability that this student has neither a visa card nor a mastercard. 4. are the events a and b disjoint? are the events a and b independent?

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