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.
-What is the probability that the tenth blood donor is the first donor with Type B blood?

Name: 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. -What is the probability that the tenth blood donor is the first donor with Type B blood?
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P \left( 9 ext { not Type } B ext {, Type B on } 10 ^ { ext {th } } ight) = ( 0.89 ) ^ { 9 } ( 0.11 ) = 0.0385

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