Homework Help is Here – Start Your Trial Now!
Math
Statistics
A multiple-choice examination consists of 80 questions, each having possible choices a, b, c, d, and e. Approximate the probability that a student will get at most 16 answers correct if she randomly guesses at each answer. (Note that, if she randomly guesses at each answer, then the probability that she gets any one answer correct is 0.2.) Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps. (If necessary, consult a list of formulas.) 0 Check X M 31 Submit A Save For Later © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center

A multiple-choice examination consists of 80 questions, each having possible choices a, b, c, d, and e. Approximate the probability that a student will get at most 16 answers correct if she randomly guesses at each answer. (Note that, if she randomly guesses at each answer, then the probability that she gets any one answer correct is 0.2.) Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps. (If necessary, consult a list of formulas.) 0 Check X M 31 Submit A Save For Later © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

statistics confuses me

A multiple-choice examination consists of 80 questions, each having possible choices a, b, c, d, and e. Approximate the probability that a student will get at most 16 answers correct if she randomly guesses at each answer. (Note that, if she randomly guesses at each answer, then the probability that she gets any one answer correct is 0.2.) Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps. (If necessary, consult a list of formulas.) 0 Check K 71 X C G M OL C ● & Save For Later Submit A 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center e O
Transcribed Image Text:A multiple-choice examination consists of 80 questions, each having possible choices a, b, c, d, and e. Approximate the probability that a student will get at most 16 answers correct if she randomly guesses at each answer. (Note that, if she randomly guesses at each answer, then the probability that she gets any one answer correct is 0.2.) Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps. (If necessary, consult a list of formulas.) 0 Check K 71 X C G M OL C ● & Save For Later Submit A 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center e O
Expert Solution
Step 1: Introduce the given information

According to the given information,

Sample size, n = 80

Probability of success, p = 0.2

Using formulas,

Mean, μ = np

Standard deviation, sigma equals square root of n p left parenthesis 1 minus p right parenthesis end root

Z minus s c o r e equals fraction numerator X minus mu over denominator sigma end fraction

steps

Step by step

Solved in 3 steps with 6 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS