SOLUTION: It is estimated that 30% of all drivers have some kind of medical aid in southafrica .what is the probability that in a sample of 10 drivers Exactly 4 will have a medical aid

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Question 1139564: It is estimated that 30% of all drivers have some kind of medical aid in southafrica .what is the probability that in a sample of 10 drivers Exactly 4 will have a medical aid
Answer by ikleyn(52932) About Me  (Show Source):
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C%5B10%5D%5E4%2A0.3%5E4%2A0.7%5E6 = %28%2810%2A9%2A8%2A7%29%2F%281%2A2%2A3%2A4%29%29%2A0.3%5E4%2A0.7%5E6 = 0.200 = 20% (approximately).