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Distribution of blood types in the united states

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Reference no: EM132581586

The distribution of blood types in the United States is as follows, where positive and negative refer to the Rhesus (Rh) factor:

O-positive: 38 %

O-negative: 7 %

A-positive: 34 %

A-negative: 6 %

B-positive: 9 %

B-negative: 2 %

AB-positive: 3 %

AB-negative: 1 %

If you draw blood samples and determine Rh factor using 5 randomly selected people from this population,

a) What is the random variable?

b) What is the probability that four of the blood samples will be Rh negative?

c) What is the probability that four of the blood samples will be Rh positive?

Reference no: EM132581586

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