Find the indicated probability. Round to three decimal places.
-A test consists of 10 true/false questions. To pass the test a student must answer at least 9 questions correctly. If a student guesses on each question, what is the probability that the student will pass the test?
A) 0.001
B) 0.010
C) 0.011
D) 0.999

Question

Quizplus · Accepted Answer

The probability of guessing each question correctly is 0.5. Using the binomial probability formula, calculate the probability of getting exactly 9 or 10 correct answers out of 10. The sum of these probabilities is approximately 0.011.

Find the Indicated Probability