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As the mobility of the population in the United States has increased and with the increase in home-based employment, there is an inclination to assume that the personal income in the United States would become fairly uniform across the country. The following table provides the per capita personal income for each of the 50 states and the District of Columbia.
a. Construct a relative frequency histogram for the income data.
b. Describe the shape of the histogram using the standard terminology of histograms.
c. Would you describe per capita income as being fairly homogenous across the United States?
One approach for defining elevated blood pressure is to use 90 mm Hg- the standard for elevated adult DBP- as the cutoff. What percentage of 17-year-old-boys would be found to have elevated blood pressure, using this approach?
What is meant by an unbiased estimator? How is bias defined? (b) Draw a figure showing the sampling distribution of an unbiased and a biased estimator.
a study seeks to determine the effect of temperature on the heart rate of pythons. data are as followstemperature c 4
according to the national retail federation 34 of taxpayers used computer software to do their taxes for the 2009 tax
a family managed to decrease their energy consumption from 145 kilowatt-hours to 136 kilowatts-hours. what percent of
A confidence interval for the population mean tells us which values of mean are plausible (those inside the interval) and which values are not plausible (those outside the interval) at the chosen level of confidence.
a polling company obtains an alphabetical list of names of voters in a precinct. they select every 20th person from
Let sample s approximate population sigma. How come the t- table in the AP booklet has degrees of freedom entries way past 30 ??? What am I missing??
suppose that you are interested in determining the cost of tuition and fees at universities in the united states.
describe the differences between correlations and regressions. can you describe situations where you would use one of
Deductible amount and limits of liability, are standardized. The sample information is reported below. At the .10 significance level, can we conclude that there is a difference in the amounts quoted?
If an analysis of variance is used for the following data, what would be the effect of changing the value of M1 to 20?
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