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on campus 60% of the studemts are registered Democrats while 40% are registered Republicans. a) exactly...

on campus 60% of the studemts are registered Democrats while 40% are registered Republicans.

a) exactly three of a sample of seven students are Democrats

b) at leaser one if the seven students is not a Democrat.

c) what is the expected number of republicans in a samole of 100 from the population of students described above?
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