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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?
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 to three times whatever happens first. if x represent the
lucy has applied for a job with google. as part of the hiring process google will of course look at her grade in bus
at most restaurants the more food you order the more money you have to pay. there are however many instances where you
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?
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.which of the following is a true statement about marys score?a.
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 owns two furniture stores. in store 1 the number of sofas sold per week by a salesperson is on average 13 per
Suppose the sample mean is x‾ = 12.89 and the sample standard deviation is s = 0.96. Should the manufacturing process be stopped?
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 rehab unit based on the following observed encounters. all
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