Mathematics

Question

a group of students is donating blood during a blood drive. a student has 9/20 probability of having type 'o' blood and a 2/5 probability of having type 'A'.what is the probability that a student has type 'o' or type 'a' blood and why?

2 Answer

  • For the answer to the question above,
    the answer is "The student can have only one blood type, so the actual events are mutually exclusive. "

    The probabilities are not mutually exclusive. Based on the group 

    P(Type O) = 9/20 = 45% or 0.45 
    P(Type A) = 2/5 = 40% or 0.40 
    P(Other) = 3/20 = 15% or 0.15
    I hope my answer helped you. Feel free to ask more questions. Have a nice day!
  • Hello there.

    A group of students is donating blood during a blood drive. a student has 9/20 probability of having type 'o' blood and a 2/5 probability of having type 'A'.what is the probability that a student has type 'o' or type 'a' blood and why?

    The student can have only one blood type, so the actual events are mutually exclusive.
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