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Question
Twenty-five percent of the employees of a large company are minorities. A random sample of 7 employees is selected.a. Define the random variable in words for this experiment.
b. What is the probability that the sample contains exactly 4 minorities?
c. What is the probability that the sample contains fewer than 2 minorities?
d. What is the probability that the sample contains exactly 1 non-minority?
e. What is the expected number of minorities in the sample?
f. What is the variance of the minorities?
Answer
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