Question

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

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?...

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?...

A student takes a multiple-choice test that has 40 questions.
Each question has 5 choices. The
student did not study for the test and decides to randomly guess at
each question. (Hint: The
probability of guessing correctly is 0.2.) Round the probability to
four decimal places.
a) Find the probability the student gets exactly 10 problems
correct._______________
(Show work.)
b) Calculate the mean.____________
c) Calculate the standard deviation._____________
Your flight has been delayed. At Philadelphia International
Airport, 90% of recent...

17. The probability of a student randomly guessing the answers
to 25 multiple choice
questions is best modeled with the _______.
A. normal distribution
B. binomial distribution
C. Poisson distribution
D. exponential distribution

a student takes a multiple choice test that has 30 questions.
each question has 5 choices. the student did not study for the test
and decides to randomly guess at each question. a) find the
probability the student gets exactly 10 problems correct. b)
calculate the mean. c) calculate the standard deviation. statistics
and probability.

A multiple-choice test has four questions, each with five
choices for the answer. Only one of the choices is correct. You
randomly guess the answer to each question. What is the probability
that you answered at least one questions correctly?
A. 0.5904
B.0.1808
C.0.216
D. 0.8192

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)

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