How do you find the probability of passing an exam?

The probability of a person passing a test is calculated taking into account his performance in previous tests. For example, a person took 100 tests previously and passed in 98 of them. P(pass) now would be 98/100 (0.98).

What is the probability that he will pass at least one subject?

The probability that he’ll pass at least one subject is 0.808.

What is the probability of passing exactly one?

2/12 + 3/12 = 5/12. So, there is a 5/12 probability that only one will pass.

What is the probability of guessing on a multiple choice test?

For every question, there are two outcomes: Either you answer correctly or you don’t. If you pick a random answer, the probability of guessing the right answer is one out of four, 1/4, or 0.25. Consequently, the probability of guessing wrong is a lot higher at 3/4 or 0.75.

What is the probability that the student studied for at least 6 hours and passes the exam?

Experience has shown that the probability of passing a particular exam if a student studies for 6 hours or more the previous day is 0.8, and that the probability of passing this exam is only 0.5 if the student studies for less than 6 hours the previous day.

What is the probability of getting a total of 7 or 11 when a pair of fair dice are tossed?

8/36 or 2/9, 22.22\%. Nearly a 1 in 4 chance of getting 7 or 11.

What is the probability of getting 5 multiple choice questions right?

Probability of getting 5 multiple-choice questions answered correctly. What is the probability of getting 5 multiple-choice questions answered correctly, if for each question the probability of answering it correctly is 1/3.

What is the probability of 3 students passing an exam?

The probability of 3 students passing an exam is 1/6, 1/4 and 1/3. What is the probability that they all pass, only one of them passed and they all failed? Originally Answered: The probability of 3 students passing an exam is 1\\6, 1\\4 and 1\\3.

What is the probability of getting at least six right answers?

If it were at least six, we can ignore 4 problems and focus on 6 of them. The probability of getting one correct is 1/2, as is each other of the 6. Multiply them all together to get the probability that you get at least six right. You can ignore the other four because it doesn’t matter what those are.

What is the probability that Mr A will pass the test?

The probability is 5/12. There are two ways for this to happen: Mr A passes, and Mr. B fails, or Mr. A fails, and Mr. B passes. The probability for the first option is 2/3 x 1/4 (2/3 chance for Mr. A to pass, times 1/4 chance that Mr. B will fail) which is 2/12.

What is the probability of getting 6 results in exhaustive ways?

Now, consider that there are 10 trials with 2 outcomes as true and false. So, exhaustive ways are 2^10=1024 ways. That would depend if you meant exactly six, or at least six. If it were at least six, we can ignore 4 problems and focus on 6 of them. The probability of getting one correct is 1/2, as is each other of the 6.