The American Red Cross Says That About 11% of the U.S

Essay

The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your
school.
-The blood drive has a total of 150 donors. Assuming this is a typical number of donors for
a school blood drive, what would be the mean and standard deviation of the number of
donors who have Type B blood?