# Blood types: The blood type O negative is called the “universal…

Question Answered step-by-step Blood types: The blood type O negative is called the “universal… Blood types: The blood type O negative is called the “universal donor” type, because it is the only blood type that may safely be transfused into any person. Therefore, when someone needs a transfusion in an emergency and their blood type cannot be determined, they are given type O negative blood. For this reason, donors with this blood type are crucial to blood banks. Unfortunately, this blood type is fairly rare; according to the Red Cross, only 7% of U.S. residents have type O negative blood. Assume that a blood bank has recruited 24 donors. Part 1 of 2(a) What is the mean number of donors who have type O negative blood? Round the answer to two decimal places. The mean number of donors who have type O negative blood is  .   Part 2 of 2(b) What is the standard deviation of the number of donors who have type O negative blood? Round the answer to four decimal places. The standard deviation of the number of donors who have type O negative blood is  .    Math Statistics and Probability MATH 201 Share QuestionEmailCopy link Comments (0)