(a) If the respondents answer truthfully, what is P(0.52 < p< 0.60)? This is the probability that ôi estimates 0.56 within plus or minus 0.04. (b) In fact, 72% of the respondents said they had voted p = 0.72). If respondents answer truthfully, what is P(p z 0.72)? This probability is so small that it is good evidence that some people who did not vote claimed that hey did vote. %3D

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
icon
Concept explainers
Topic Video
Question
I need some help with my stats homework. This comes from the textbook introduction to the practices of statistics ninth edition. Can you help me please.
4.62 Normal approximation for a sample proportion.
A sample survey contacted an SRS of 700 registered
voters in Oregon shortly after an election and asked
respondents whether they had voted. Voter records show
Transcribed Image Text:4.62 Normal approximation for a sample proportion. A sample survey contacted an SRS of 700 registered voters in Oregon shortly after an election and asked respondents whether they had voted. Voter records show
the Normal distribution with mean µ = 0.56 and
that 56% of registered voters had actually voted. We
will see in the next chapter that, in this situation, the
proportion p of the sample who voted has approximately
the Normal distribution with mean µ = 0.56 and
standard deviation o =0.019.
(a) If the respondents answer truthfully, what is
P(0.52 < p < 0.60)? This is the probability that ôi
estimates 0.56 within plus or minus 0.04.
(b) In fact, 72% of the respondents said they had voted
(p = 0.72). If respondents answer truthfully, what is
P(p z 0.72)? This probability is so small that it is good
evidence that some people who did not vote claimed that
hey did vote.
%3D
Transcribed Image Text:the Normal distribution with mean µ = 0.56 and that 56% of registered voters had actually voted. We will see in the next chapter that, in this situation, the proportion p of the sample who voted has approximately the Normal distribution with mean µ = 0.56 and standard deviation o =0.019. (a) If the respondents answer truthfully, what is P(0.52 < p < 0.60)? This is the probability that ôi estimates 0.56 within plus or minus 0.04. (b) In fact, 72% of the respondents said they had voted (p = 0.72). If respondents answer truthfully, what is P(p z 0.72)? This probability is so small that it is good evidence that some people who did not vote claimed that hey did vote. %3D
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Application of Algebra
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
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