Mathematics

Mathematics, 29.06.2019 02:00, cassiegagnier73

The probability of a student getting an

The probability of a student getting an

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Mathematics, 27.06.2019 09:50, garcia36

Astudent answers a multiple choice exam question that has 4 possible answers.suppose that the probability that the student knows the answer to the question is 0.80 and the probability that the student guesses (doesn’t know the answer) is 0.20. if the student knows the answer, the probability of choosing the correct answer is 1 (because the student knows the answer). if the student guesses, the probability of choosing the correct answer is 0.25. a) what is the probability that the student really knew the correct answer? (that is, what is the probability that the student knew the answer, given that the student got the answer correct). b) suppose there is a third option. the student knew the answer with probability of .7, the student guessed with probability .2, and the student(incorrectly) thought they knew the answer given that the student thought they knew it is 0. the conditional probability of a student getting the correct answer given that they guessed is still .25. using this information, calculate the probability that the student really knew the correct answer.

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Mathematics, 16.07.2019 06:30, mahadharun

Common information: in answering a question on a multiple-choice test, a student either knows the answer or the student just guesses. suppose that the probability that the student knows the answer is 0.75, and the probability the student doesn't know the answer and guesses is 0.25. assume that there are 5 choices for each multiple-choice question, i.e. the probability that the student who guesses will be correct is 0.20. the student who knows the answer will be correct all the time. what is the conditional probability that the student knew the answer to a question given that the student answered it correctly

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Mathematics, 28.07.2019 21:30, xatziry1717

Assume the only grades possible in a history course are a, b, c, or lower than c. the probability that a randomly selected student will get an a in the course is 0.46, the probability that a student will get a b in the course is 0.17, and the probability that a student will get a c in the course is 0.23. a. what is the probability that a student will get an a or a b? b. what is the probability that a student will get an a or a b or a c? c. what is the probability that a student will get a grade lower than a c?

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Mathematics, 24.10.2019 01:00, ethancarter560

The probability that a student has a visa card (event v) is .63. the probability that a student has a mastercard (event m) is .11. the probability that a student has both cards is .03. (a) find the probability that a student has either a visa card or a mastercard. (round your answer to 2 decimal places.) probability .77 .77 incorrect (b) in this problem, are v and m independent

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