Analyze probability of guessing correct answers
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While taking a multiple choice test, I realize I cannot answer the 5 questions without guessing. There are 5 choices for each question, A B C D or E. Only one answer is correct for each questions. What is the probability of me guessing.
A) Exactly two correct
B) At most two correct
C) All Five Correct
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Solution Summary
The expert analyzes the probability of guessing correct answers. A complete, neat and step-by-step solution is provided.
Solution Preview
n = 5
p = probability of an answer being correct = 1/5 = 0.2
q = probability of an answer being incorrect = 1 - 0.2 = ...
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