There are twenty multiple-choice question on exam, each having responses a, b, c, d. Suppose that a student has a 80% chance to answer each question correctly, and all the answers are independent. If the student needs to answer at least 18 questions to get an A, what is the probability that the student will get an A?

Find the indicated probability. A multiple choice test has 12 questions each of which has 5 possible answers, only one of which is correct. If Judy, who forgot to study for the test, guesses on all questions, what is the probability that she will answer exactly 3 questions correctly?

You took a multiple-choice math test where there were 10 questions and each question had 4 answers to chose from (but only one of them was correct).  What is the probability that you get exactly 9 correct? Be sure to identify your variables.

Peter took an MCQ based test. He had not prepared for the test and ended up guessing the answer for each of the MCQ. The test had a total of 10 MCQS. Each MCQ had 5 possible answers for selection. After the test, she is interested in calculating the probability of getting exactly 6 questions correct on this test?

A multiple choice test contains five questions, and each question has three possible answers. A passing grade is three or more correct answers. What is the probability of passing if you guess the answers at random?

In a survey of 189 people, 139 expressed support for the governor.Find p and q, where p is the probability of randomly choosing a person who supports the governor in the survey. p= q=

A student takes a 28-question multiple-choice exam but did not study and randomly guesses each answer. Each question has three possible choices for the answer. Find the probability that the student guesses more than 75% of the questions correctly.