Question

A student takes a 40-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. (Round your answer to three decimal places.)

Answer #1

A student takes a ten-question true-false quiz, but did not
study and randomly guesses each answer. Find the probability that
the student passes the quiz with a grade of at least 40% of the
questions correct. (Round your answer to three decimal places.)

A student takes an exam containing 19 multiple choice questions.
Each question has 5 choices. If the student guesses, what is the
probability that he will get less than 7 but more than 5 questions
right? Round your answer to four decimal places

A student takes a multiple-choice test that has 10 questions.
Each question has five choices. The student guesses randomly at
each answer. 1. Find P(2) 2. P (more than 3)

A student takes a 19 question multiple choice quiz with 4
choices for each question. If the student guesses at random on each
question, what is the probability that the student gets more than 2
questions correct?

A student takes a containing 19 multiple-choice questions. Each
question has 5 choices. If the student guesses, what is the
probability that he will get between 3 and 5 (both inclusive)
questions right? Round your answer to four decimal places.

A student takes an exam containing 10 multiple choice questions.
The probability of choosing a correct answer by knowledgeable
guessing is 0.5. If the student makes knowledgeable guesses, what
is the probability that he will get between 4 and 8 (both
inclusive) questions right? Round your answer to four decimal
places.

On a certain statistics exam, there are 9 multiple choice
questions. Each question has 5 possible answers to choose from (and
only 1 correct answer). Suppose you didn’t study at all and are
planning on guessing the correct answer for each question.
Therefore, the probability of guessing a question correctly is
___________ . (Round to two decimals)
Let X = number of questions the student guesses
correctly
(Round all answers to four decimals)
a) What’s the probability you
guess at...

A Student takes a multiple choice Quiz where there are "n"
possible answers in each question.
1- The Student answers the question correctly if the Student knows
the answer.
2- The Student answers the question randomly if the Student doesn't
know the answer.
3- Suppose that the Quiz has 20 questions, and that the Student
knows "80%" of the questions correctly.
what is the expected number of questions that the Student will get
correctly?

Round to 4 decimals please
A quiz has 12 multiple choice questions. Each question has 4
answer choices. If a student takes the quiz and randomly guesses on
every question..
Question 1 Find the probability the student gets between 1 and
6, exclusive, questions correct?
Question 2 Find the probability the student gets more than 8
questions correct?

A student takes an exam containing 10 true or false questions.
If the student guesses, what is the probability that he will get
less than 6 but more than 3 questions right? Round your answer to
four decimal places.

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