Question

An under prepared student is given a ten question, multiple choice, pop quiz that has four choices (A,B,C,D). He guesses on every problem. Find the following.

(a) the average number of correct questions

(b) the standard deviation in correct questions

(c) the probability of getting half of the questions correct

(d) the probability of getting all incorrect

(e) the probability of getting at least one correct

(f) the probability of getting no more than two correct

(g) the probability of passing (70% or higher)

Answer #1

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?

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 quiz consists of 100 multiple choice questions. Each question
has 4 possible answers (A-D) and only one answer is correct. If the
student guesses the answer to the questions, then what is the
probability earn a grade of 70% or higher? Show how to on Ti-84
Calculator

A student has just been given a 10-question multiple-choice
quiz. Each question has five answers, of which only one is correct.
The student has not attended class recently, and doesn't know any
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find the indicated probability. (Round your answer to three decimal
places.) What is the probability that the student will answer all
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A problem on a multiple-choice quiz is answered correctly with
probability 0.95 if a student is prepared. An unprepared student
guesses between 5 possible answers, so the probability of choosing
the right answer is 1/5. Seventy-five percent of students prepare
for the quiz. If Mr. X gives a correct answer to this problem, what
is the chance that he did not prepare for the quiz?

A problem on a multiple-choice quiz is answered correctly with
probability 0.95 if a student is prepared. An unprepared student
guesses between 5 possible answers, so the probability of choosing
the right answer is 1/5. Seventy-five percent of students prepare
for the quiz. If Mr. X gives a correct answer to this problem, what
is the chance that he did not prepare for the quiz?

Jimmy has a quiz today that is multiple choice (a, b, c, or d)
with ten questions, but he did not study, so he decides to randomly
mark answers on his scantron without reading the questions.
a) Why should the number of questions Jimmy gets correct on the
quiz follow a binomial distribution, to wit, what are the
requirements to use a binomial distribution and how are they met in
this scenario?
b) List the parameters that define this distribution...

A quiz consists of 15 multiple-choice questions. Each question
has 5 choices, with exactly one correct choice. A student, totally
unprepared for the quiz, guesses on each of the 15 questions. a.
How many questions should the student expect to answer correctly?
b. What is the standard deviation of the number of questions
answered correctly? c. If at least 7 questions must be answered
correctly to pass the quiz, what is the chance the student
passes?

A short statistics quiz consists of two multiple choice
questions. Each question had four possible answer choices (A, B, C,
and D).
a. Make a list of the possible answer keys for the quiz or make
a tree diagram for them.
b. How many possible answer keys are there?
c. If a student guesses at random for both questions, what is
the probability they get both questions right?
d. What is the probability that C was not the correct answer...

a) A student has just been given a 7-question multiple-choice
quiz in their anatomy class. Each question has five answers, of
which only one is correct. Since this student has not attended any
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a. 0.7903
b. 0.8154
c. 0.3670
d. 0.1429
b) A student has just been given a 7-question multiple-choice...

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