A blood bank asserts that a person with type O blood and a negative Rh factor (R

Question

A blood bank asserts that a person with type O blood and a negative Rh factor (Rh-) can donate blood to any person with any blood type. Their data show that 43% of people have type O blood and 18% of people have Rh- factor; 49% of people have type O or Rh- factor. Part (a) Find the probability that a person has both type O blood and the Rh- factor. Part (b) Find the probability that a person does NOT have both types O blood and the Rh-factor. ____ At a college, 68% of courses have final exams and 46% of courses require research papers, Suppose that 25% of courses have a research paper and a final exam. Part (a) Find the probability that a course has final exam or a research paper.

Explanation / Answer

Solution:-
a) Probability of type O negative = 43% * 18% = 7.74%

b) Probability of neither type O and neither negative (of any kind) = (100% - 49%) = 51%

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