Hello there. <span> 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? </span> The student can have only one blood type, so the actual events are mutually exclusive.
For the answer to the question above, the answer is "<span>The student can have only one blood type, so the actual events are mutually exclusive. "</span>
<span>The probabilities are not mutually exclusive. Based on the group </span>
<span>P(Type O) = 9/20 = 45% or 0.45 </span> <span>P(Type A) = 2/5 = 40% or 0.40 </span> <span>P(Other) = 3/20 = 15% or 0.15 I hope my answer helped you. Feel free to ask more questions. Have a nice day!</span>
