A reputable polling company reports the results of an opinion poll on a recent newsarticle. A social media channel conducts the same opinion poll with its members. Thechannel claims that their results are more reliable than those reported by the pollingcompany as they used a much larger sample size compared to polling company. Do youagree with comments by the social media company? Give a brief explanation to supportyour decision.

Sample survey is collecting a data from the population. there are different types of methods of…

Answered: A reputable polling company reports the…

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

Similar questions

The Web site www.twiigs.com allows you to voteon polls that interest you or to post one of your own. Oncec08ProducingDataSampling.indd Page 216 9/6/11 4:28:22 PM user-s163 user-F452you have found a poll of interest, you just click on “Vote,”and your response becomes part of the sample. One of thequestions in July 2010 was “How many times have you beenpulled over by the police?” Of the 780 people responding,70% said “1–5 times.” You can conclude that(a) about 70% of Americans have been pulled over by thepolice “1–5 times.”(b) the poll uses voluntary response, so the results tell uslittle about the population of all adults.(c) more people still need to vote on the question, as a largersample is required to reduce bias.
A principal wants to learn how students studied for the EOCs. Explain how the principal could poll the participants if she wanted to use a cluster sample.
A researcher gathered a sample of participants who volunteered for a studying of phobias. She measured anxiety level of participants as they viewed photos of spiders and again when they viewed puppies. Which statistical test is appropriate for this study and why?
Every year favorite songs compete to be on a Top 200 list based upon sales and rankings by the experts in the music industry. These songs have many characteristics, such as song length and beats per minute, which vary from category to category in the music industry. A DJ wondered if the number of beats per minute in songs classified as dance music were lower than the beats per minute in the songs that are ranked on a Top 200 list from 2001. A random sample of songs from each group was selected and the beats per minute are listed in the chart at the right. Calculate and interpret the 90% confidence interval for the difference in beats per minute between songs that are classified as dance music and songs that are ranked on a Top 200 list.
In 2008, as an advertising campaign, the Nabisco Company announced a "1200 Chips Challenge," claiming that their 18-ounce bag of Chips Ahoy cookies contained an average of at least 1200 individual chocolate chips. Dedicated statistics students at the Air Force Academy (no kidding, they actually did this) purchased some randomly selected bags of cookies and counted the chocolate chips. Data from their sample is given below. %3D 1219, 1214, 1087, 1200 , 1419,1121 , 1325 , 1345 , 1244, 1258 , 1356, 1132, 1191 , 1270, 1295, 1135 Find a 95% confidence interval for the population mean number of chips in a bag of Chips Ahoy Cookies. (Give final answers to 2 decimal place accuracy) ANSWER: It can be stated with 95% confidence that the true population mean number of chocolate chips in a bag of Chips Ahoy Cookies lies in the interval <μ < chocolate chips per bag Based on this confidence interval, is the Nabisco Company justified in making their claim? O yes, because the true population mean is…
The serum cholesterol levels (in mgdL) of 17 individuals are 242, 201, 235, 218, 230, 237, 254, 225, 208, 240, 247, 211, 259, 220, 198, 257, 244 Find 25th and 60th percentiles for these cholesterol levels. (If necessary, consult a list of formulas.)
In order to compare the real estate markets in Pittsburgh and Philadelphia, a realtor selected a random sample of 150 homes in the Pittsburgh area and 100 homes in the Philadelphia area. Shown below are dotplots showing the distribution of home price for the homes in these two cities.
There are 64% of US adults who own a smartphone, up from 35% in 2011. Smartphones have become an important way for Americans to communicate, go online, access and share information. The Pew Research Center surveyed 1635 people in November, 2014 on smartphone ownership. Their goal was to learn how Americans use their smartphone devices. Identify the population and the sample.
The local newspaper selected 1500 residents of Claremore residents to poll about a proposed tax increase. What is the population that they are studying? What is the sample involved in the study? If they chose to divide the city by elementary school attendance area and then contacted 7 people in each area asking whether they support the tax increase, what method of sampling would they be using? If they placed a link on their website that interested parties could report whether they support the tax increase, what method of sampling would they be using? Let’s assume that on that web page, there were 437 who supported the tax increase and 354 who did not. What is the sample proportion?
In a poll of 480 universities students, 220 said they were opposed to legalizing marijuana estimate the percentage of students who oppose legalizing marijuana

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

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

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

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

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

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

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

A reputable polling company reports the results of an opinion poll on a recent news article A social media channel conducts the same oninion poll with its members The