Question

An unprepared student must take a 10-question multiple-choice test that has 5 possible answers per question. If the student guesses on all the questions what is the probability that they will pass the exam. (70% required to pass)

Answer #1

An unprepared student must take a 7 question multiple
choice test that has 5 possible answers per question. If the
student guesses on the first question, what's the probability that
they will answer that question incorrectly?
How do you solve?

Clovis will take a 12- question multiple-choice test in
psychology. Regrettably he is totally unprepared and will randomly
guess the answers. Each problem has 4 answer choices (A, B, C, and
D). Let X be the number of correct guesses on the test. a. What is
the probability distribution of X? X~ b. What is ?, the expected
number of correct answers Clovis will get? c. What is the
probability that Clovis will get exactly six correct answers? d.
Clovis...

A test consists of 10 multiple choice questions, each with five
possible answers, one of which is correct. To pass the test a
student must get 60% or better on the test. If a student randomly
guesses, what is the probability that the student will pass the
test? Please show work

MC1701: A test consists of 10 multiple choice questions, each
with five possible answers, one of which is correct. To pass, a
student must get at least 6 correct on the test. If a student
randomly guesses at every question, what is the probability that
the student fails the test?
a.
2.6%
b.
20%
c.
80%
d.
97.4%
e.
99.4%
f.
None of these

A student guesses on every question of a multiple-choice test
that has 7 questions, each with 3 possible answers. What is the
probability that the student will get at least
5 of the questions right?

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
of the answers. Assume that guesses are made on all ten questions,
find the indicated probability. (Round your answer to three decimal
places.) What is the probability that the student will answer all
questions incorrectly?

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 5 question multiple choice test has 4 possible answers to each
question. A student selects at least 3 correct answers.
A. 0.0010
B. 0.0146
C. 0.1035
D. 0.0879

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 quick quiz consists of a multiple-choice question with 6
possible answers followed by a multiple-choice question with 5
possible answers. If both questions are answered with random
guesses, find the probability that both responses are
correct.

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