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You divide (the number of ways the try can succeed) by (the total number of ways it can come out).

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Q: How do you work out probability questions?
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What is the probability of getting a zero for feelings on the Myers-Briggs test?

In order to calculate such probability, you have to know the number of questions in that particular Myers Briggs test that refer to the Thinking/Feeling dichotomy. Assuming that you will pick answers randomly, the probability will be lower when there are more questions. For 8 questions on T/F preference, there is a 12.5% probability for a score of 0 on Feeling. For 16 questions, the probability is 6.2%. For 32 questions, the probability is 3.1%. etc. If you pick your answers according to your own beliefs, it would be very difficult to assess such a probability. However there will be a approx. 30% higher chance for a man to score 0 on Feeling than for a woman.


How do you answer an experimental probability?

Experimental probability is not something that needs to be, or even can be, answered. There may be particular instances in which there are questions about experimental probability and they can only be answered in the context on which they arose.


There are five questions on a quiz with four possible answers what is the probability you get 100 percent?

Probability of each question correct is 1/4 or 0.25. Since there are 5 questions, raise 0.25 to the 5th power or (0.25)5. So, probability all correct is 0.0009765.


What is the probability of guessing the correct answer to a true false questions?

50%


What is the probability a student can answer 49 out of 50 questions wrong on a four answer multiple choice exam?

Assuming the questions are answered at random, the probability is 0.000009, approx.