A certain online math learning software asks only multiple
choice questions with 6 options. The program requires that a
student answers 8 multiple choice questions correctly before moving
on to the next topic. Suppose that the student guesses at random
for all of the questions.
What is the probability that a student gets the correct answer on
the first 8 questions?
What is the probability that the student meets this goal in exactly 21 tries?
Here trials(questions) are independent of each other and probability of success is constant for all trials hence we can use binomial distribution.
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