Question

**Consider a multiple-choice examination with 50
questions. Each question has four possible answers. Assume that a
student who has done the homework and attended lectures has a 65%
chance of answering any question correctly. (Round your answers to
two decimal places.)**

**(a)**

**A student must answer 43 or more questions correctly to
obtain a grade of A. What percentage of the students who have done
their homework and attended lectures will obtain a grade of A on
this multiple-choice examination? Use the normal approximation of
the binomial distribution to answer this question.**

**Incorrect: Your answer is incorrect. %**

**(b)**

**A student who answers 34 to 39 questions correctly will
receive a grade of C. What percentage of students who have done
their homework and attended lectures will obtain a grade of C on
this multiple-choice examination? Use the normal approximation of
the binomial distribution to answer this question.**

**Incorrect: Your answer is incorrect. %**

**(c)**

**A student must answer 28 or more questions correctly to
pass the examination. What percentage of the students who have done
their homework and attended lectures will pass the examination? Use
the normal approximation of the binomial distribution to answer
this question.**

**Incorrect: Your answer is incorrect. %**

**(d)**

**Assume that a student has not attended class and has not
done the homework for the course. Furthermore, assume that the
student will simply guess at the answer to each question. What is
the probability that this student will answer 28 or more questions
correctly and pass the examination? Use the normal approximation of
the binomial distribution to answer this question.**

Answer #1

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 65% chance of
answering any question correctly. (Round your answers to two
decimal places.)
A student must answer 45 or more questions correctly to obtain a
grade of A. What percentage of the students who have done their
homework and attended lectures will obtain a grade of A on this
multiple-choice examination? Use...

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 65% chance of
answering any question correctly. (Round your answers to two
decimal places.)
(a)
A student must answer 43 or more questions correctly to obtain a
grade of A. What percentage of the students who have done their
homework and attended lectures will obtain a grade of A on this
multiple-choice examination?...

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 75% chance of
answering any question correctly. (Round your answers to two
decimal places.)
(a) A student must answer 43 or more questions correctly to
obtain a grade of A. What percentage of the students who have done
their homework and attended lectures will obtain a grade of A on
this multiple-choice examination?...

Consider a multiple-choice examination with 50 questions. Each
question has four possible answers. Assume that a student who has
done the homework and attended lectures has a 65% chance of
answering any question correctly. (Round your answers to two
decimal places.)
(a)
A student must answer 44 or more questions correctly to obtain a
grade of A. What percentage of the students who have done their
homework and attended lectures will obtain a grade of A on this
multiple-choice examination?...

2. A multiple-choice test has 25 questions. There are four
choices for each question. A student who has not studied for the
test decides to answer all questions by randomly choosing one of
the four choices. What probability distribution can be used to
compute his chance of correctly answering at least 15
questions?
a. Normal distribution b. Binomial distribution c. Poisson
distribution d. None of these

1. A student takes a multiple-choice
examination with 25 questions. Each question has four possible
answers (A, B, C, or D). Unfortunately, the student did not prepare
for the examination, so they “guessed” at random on each question.
SET UP, meaning PLUG NUMBERS in to EACH TERM but
do NOT SOLVE, the formula to determine the
probability the student earns between 76% and 84%, inclusive, on
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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?

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 quiz has 25 multiple choice questions. Each
question has 3 possible answers, one of which is correct. A correct
answer is worth 4 points (a ticket with the value of 4), but a
point is taken off for each incorrect answer (a ticket with the
value of -1). A student answers all 25 questions by guessing at
random.
a) Present the problem with an appropriate box model.
Find the expected value and the standard error for the sum...

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?

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