SOLUTION: A statistics textbook chapter contains 60 exercises, 6 of which are essay questions. A student is assigned 10 problems. What is the probability that at least one is essay?

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Question 1200325: A statistics textbook chapter contains 60 exercises, 6 of which are essay questions. A student is assigned 10 problems.
What is the probability that at least one is essay?
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
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A statistics textbook chapter contains 60 exercises, 6 of which are essay questions.
A student is assigned 10 problems. What is the probability that at least one is essay?
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The probability that no one is an essay is


    P =  = 0.3174  (rounded).


The probability that at least one is an essay is the complement to it

    P' = 1 - 0.3174 = 0.6826  (rounded).  ANSWER

Solved.

The long formula is SELF-EXPLANATORY: its meaning is clear from its structure.