Question
In: Statistics and Probability
The Gallup organization conducted a poll with the following question: “In general, do you feel the...
The Gallup organization conducted a poll with the following question: “In general, do you feel the laws covering the sale of firearms should be made more strict, less strict or kept as they are now?” In February 1999, 60% of those surveyed said “more strict” and on April 26,1999, shortly after the Columbine high shootings, 66% said “more strict”. a) Assume both polls used samples of 560 people. Do a test to see whether the proportion that said “more strict “is statistically different in the two months at a significance level of 0.01. b) Repeat part a) with a sample of 1120 people. c) Comment on the p-value in both parts a and b and on the conclusion.
Solutions
orchestra answered 2 years agoRelated Solutions
A Gallup poll conducted in November of 2011 asked the following question, “What would you say...
A Gallup poll conducted in November of 2011 asked the following
question, “What would you say is the most urgent health problem
facing this country at the present time?” The choices were access,
cost, obesity, cancer, government interference, or the flu. The
responses were access (27%), cost (20%), obesity (14%), cancer
(13%), government interference (3%), or the flu (less than
0.5%).
The following is an excerpt from the Survey Methods
section. “Results for this Gallup poll are based on telephone...
A Gallup poll conducted in November of 2011 asked the following question, “What would you say...
A Gallup poll conducted in November of 2011 asked the following
question, “What would you say is the most urgent health problem
facing this country at the present time?” The choices were access,
cost, obesity, cancer, government interference, or the flu. The
responses were access (27%), cost (20%), obesity (14%), cancer
(13%), government interference (3%), or the flu (less than
0.5%).
The following is an excerpt from the Survey Methods
section. “Results for this Gallup poll are based on telephone...
A Gallup poll conducted in November of 2011 asked the following question, “What would you say...
A Gallup poll conducted in November of 2011 asked the following
question, “What would you say is the most urgent health problem
facing this country at the present time?” The choices were access,
cost, obesity, cancer, government interference, or the flu. The
responses were access (27%), cost (20%), obesity (14%), cancer
(13%), government interference (3%), or the flu (less than 0.5%).
The following is an excerpt from the Survey Methods section.
“Results for this Gallup poll are based on telephone...
1. A recent poll was conducted by the Gallup organization between April 2nd and April 8th,...
1. A recent poll was conducted by the Gallup organization
between April 2nd and April 8th, 2018. A total of 785 Facebook
users living in the U.S. were selected using random digit dialing
and were interviewed over the phone (either landline or cell
phone). Respondents were asked the following question: “How
concerned are you about invasion of privacy when using Facebook?
Very concerned, somewhat concerned, not too concerned or not
concerned.” 43% of those selected said “very concerned”. Suppose we...
a gallup poll conducted in 2012 asked people do you think the united states benefit from...
a
gallup poll conducted in 2012 asked people do you think the united
states benefit from having a clwss of rivh people. in reponse
80^
A Gallup poll asked a random sample of 1000 adults nation-wide the following question:: "Are you...
A Gallup poll asked a random sample of 1000 adults nation-wide
the following question:: "Are you in favor of the death penalty for
a person convicted of murder?" 71% of the people in the sample
answered "Yes".
1. A 95% Confidence Interval for the percent of all adults
nation-wide in favor of the death penalty is (Hint: Fill in the
first blank with the sample % and the second with the margin of
error.)
（ ） % +/- （ ）%...
A Gallup poll was conducted in 2010 in which they surveyed people all over the world...
A Gallup poll was conducted in 2010 in which they surveyed
people all over the world and found that 44% of adults in the world
believe that global warming is a serious threat to themselves and
their families. Assume that this is the population proportion of
adults worldwide who believe global warming is a threat (p= 0.44),
and suppose we repeatedly select random samples of size 250, and
ask them the same question.
(a) Find the mean, and standard error,...
2. According to a Gallup poll conducted in 2008, 78.3% of Americans felt satisfied with the...
2. According to a Gallup poll conducted in 2008, 78.3% of
Americans felt satisfied with the way things were going in their
personal lives. A researcher wonders of the percentage satisfied is
lower today. To find out, the researcher surveys a random sample of
1,173 Americans, and finds that 895 feel satisfied with the way
things are going in their personal lives. The researcher wishes to
test the null hypothesis at a significance level of 0.05. (a)
Conduct a large...
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 387 women...
A Gallup poll to survey the top concerns of Americans was
conducted. Suppose that 387 women and 359 men were independently
and randomly selected, and that 242 women and 202 men chose the
state of the economy as their biggest concern. Can we conclude that
the proportion of women (p1), choosing the state of the economy as
their biggest concern, exceeds the proportion of men
(p2)? Use a significance level of α=0.01 for the
test.
Step 1: Choose the correct alternative...
A Gallup Youth poll was conducted to determine the topics that teenagers most want to discuss...
A Gallup Youth poll was conducted to determine the topics that
teenagers most want to discuss with parents. The findings show that
46% would like more discussion about the family’s financial
situation, 24% would like to talk about school, and 30% would like
to talk about religion. The survey was based on a sampling of 505
teenagers selected at random from all U.S.
teenagers.
Questions:
Describe the individuals of this study.
What is the main variable of interest in this...
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