out of the 224, the expected number of A+ i
= .357(224) = 79.968 or 80 cases
out of the 224, the expected number of AB-
= .006(224) = ....
carry on
The experimental probability that a person in the United States has the A+ blood type is 35.7%. The experimental probability that a person in the United States has the AB– blood type is 0.6%. Last week, a blood bank received 224 donations. Predict how many more A+ donations the bank received than AB– donations. Explain your reasoning.
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