Find the mean number of graduates out of 20 players if 80% of players graduate.
Find the standard deviation of the count if 80% of players graduate.
Suppose now that the 20 players came from a population of which graduated. What is the standard deviation of the count of graduates? If , what is ? What does your work show about the behavior of the standard deviation of a binomial distribution as the probability of success gets closer to 1?
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(a) . (b) . (c) . . As gets closer to 1, the standard deviation gets smaller.