What is a confidence interval

Assignment Help Basic Statistics
Reference no: EM131679940

Question: In June 2008, SBRI Public Affairs conducted a telephone poll of 1004 adult Americans aged 18 and older. One of the questions asked was, "In the past year, was there ever a time when you?" Respondents could choose more than one of the answers mentioned. Of the respondents, 64% said "cut back on vacations or entertainment because of their cost," 37% said "failed to pay a bill on time," and 25% said "have not gone to a doctor because of the cost." (Source: https://www.srbi.com/AmericansConcernEconomic.html.) Using these results, find a 95% confidence interval for the corresponding population percentage for each answer. Write a one-page report to present these results to a group of college students who have not taken statistics. Your report should answer questions such as:

(1) What is a confidence interval?

(2) Why is a range of values more informative than a single percentage?

(3) What does 95% confidence mean in this context?

(4) What assumptions, if any, are you making when you construct each confidence interval?

Reference no: EM131679940

Questions Cloud

Determine joe break-even dollar sales volume : Joe's Tax Service prepares tax returns for low-to middle-income taxpayers. Determine Joe's break-even dollar sales volume
Find number of workers yielded a confidence interval : Let µ be the hourly wage (excluding tips) for workers who provide hotel room service in a large city. A random sample of a number (more than 30).
How the elements illustrate the theme expressed in the story : Describe the core conflict represented in the story. Explain how the elements/techniques illustrate the theme and conflict expressed in the story.
Find the investments internal rate of return : Westmont Publishing is considering the purchase of a used printing press costing $75,200. The investments internal rate of return is
What is a confidence interval : In June 2008, SBRI Public Affairs conducted a telephone poll of 1004 adult Americans aged 18 and older. One of the questions asked was.
What risk factors do not apply to antonio : What risk factors do not apply to Antonio? What risk factors do?
Create a unit plan integrating science and math : Differentiation of instruction to address the diverse needs of students. Identify the differentiation strategies for the specific diverse groups.
Compute the proportion of all potential vaccinated dogs : A group of veterinarians wants to test a new canine vaccine for Lyme disease. (Lyme disease is transmitted by the bite of an infected deer tick.)
Develop your interpretation of this quote : Steven Sample states "One must always keep in mind that leadership is an art, not a science.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Conduct an anova comparing anxiety levels of treatments

Conduct an ANOVA comparing anxiety levels (at post test only) of participants across all three treatments, conduct post hoc test if needed.

  A coin is tossed until obtainning a head or tossing it up

a coin is tossed until obtainning a head or tossing it up to three times whatever happens first. if x represent the

  But if she does not get an a there is only a 11 chance

lucy has applied for a job with google. as part of the hiring process google will of course look at her grade in bus

  If you collect data at several restaurants mixing both the

at most restaurants the more food you order the more money you have to pay. there are however many instances where you

  Which summary statistics you choose to summarize center

The histogram shows the distribution of the prices of a small, plain pizza (in $) for 156 weeks in Dallas, Texas.- Which summary statistics would you choose to summarize the center and spread in these data? Why?

  Perform strenuous tasks required of a shipboard firefighter

A study was conducted to compare the abilities of men and women to perform the strenuous tasks required of a shipboard firefighter (Human Factors 24 [1982]).

  Mary took a test and her score was the 85th percentile

mary took a test and her score was the 85th percentile.which of the following is a true statement about marys score?a.

  Open the statcrunch file housing_prices_categorical_factors

open the StatCrunch file Housing_Prices_Categorical_ Factors. The varia bles in the file are explained in the file description in StatCrunch. Look at the description of the variables in the file and the variables themselves and develop a "research q..

  Mr brown has a position open for a person to sell sofas

mr. brown owns two furniture stores. in store 1 the number of sofas sold per week by a salesperson is on average 13 per

  Should the manufacturing process be stopped

Suppose the sample mean is x‾ = 12.89 and the sample standard deviation is s = 0.96. Should the manufacturing process be stopped?

  Use simple random sample applet to select sample of size 5

Select a sample. Consider a population of 15 people. Use the Simple Random Sample applet to select a sample of size 5. Report the identification numbers of those selected in your sample.

  Find the length of stay standard deviation for an inpatient

find the length of stay standard deviation for an inpatient rehab unit based on the following observed encounters. all

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd