blood bank catalogs the types of blood, including positive or negative Rh factor, given by donors during the last five days. The number of donors who gave each blood type is listed in the following table. A donor is selected at random. Blood Type O A B AB positive Rh 156 139 37 12 negative Rh 28 25 8 4 a. Find the probability that the donor has type O or type A blood. b. Find the probability the donor has type AB blood given that they are Rh-negative. c. Find the probability that the donor is Rh-positive given that they are type O.

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 blood bank catalogs the types of blood, including positive or negative Rh factor, given by donors during the last five days. The number of donors who gave each blood type is listed in the following table. A donor is selected at random.

Blood Type
                      O     A     B    AB
positive Rh  156  139   37   12
negative Rh  28    25    8      4


a. Find the probability that the donor has type O or type A blood.
b. Find the probability the donor has type AB blood given that they are Rh-negative.
c. Find the probability that the donor is Rh-positive given that they are type O.

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