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 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? Use the normal approximation of the binomial distribution to answer this question.

%

(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.

%

(c)

A student must answer 30 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.

%

(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 30 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 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?...

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
the 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

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

On
a multiple-choice test with nine questions, each question has for
possible answers, one of which is correct. For students who gets it
all answers, find the variance for the number of correct
answers.

A multiple-choice test consists of 25 questions, each with four
possible answers. If our desperate business statistics student
answers the test by guessing the answers before reading the
questions (that is, by selecting an answer at random for each
question), use the normal curve approximation to find the
probabilities that he will get:
exactly six correct answers (b) at least seven correct
answers
fewer than four correct answers (d) more than two, but fewer
than nine correct answers
What is...

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