Two Basic Rules of Probability · Exercise 28
According to the American Red Cross, 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 45% of people have type O blood and 7% of people have Rh- factor; 38% of people have type O or Rh- factor.
(a) Find the probability that a person has both type O blood and the Rh- factor.
(b) Find the probability that a person does NOT have both type O blood and the Rh- factor.
OpenStax, Introductory Statistics 2e · §3.3 Two Basic Rules of Probability · Exercise 28
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