Need help with a Statistics for business and economics quiz

Dec 17th, 2015
Steve1995
Category:
Engineering
Price: $5 USD

Question description

When you arrive at your statistics class on a hot Thursday afternoon, your instructor surprises you with an unexpected quiz.

Unfortunately, you haven't paid any attention to the lecture in the past weeks. The test is multiple choice. It consists of 10 questions, each with 4 possible answer(A,B,C and D).

You decide that your best course of action is to give a random answer to each question (you don't even bother to read the question or the answer).

a.What is the probability of giving the correct answer to a multiple-choice question with four possible answers?

b. If you give random answer to the 10 questions, how many questions would you expect to have answered correctly? In other words, what is the Expected value?

c. You will pass the test if you answer at least 8 out of 10 questions correctly. What is the probability that you pass the test?



Tutor Answer

(Top Tutor) Daniel C.
(997)
School: Boston College
PREMIUM TUTOR

Studypool has helped 1,244,100 students

Summary
Quality
Communication
On Time
Value
pmallory
Mar 23rd, 2017
" Totally impressed with results!! :-) "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1826 tutors are online

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors