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A legal researcher is studying the age distribution of juries by comparing them with the overall age distribution of available jurors. The researcher claims that the jury distribution is different from the overall distribution; that is, there is a noticeable age bias in jury selection in this area. The table shows the number of jurors at a county court in one year and the percent of persons residing in that county, by age. Use the population distribution to find the expected juror frequencies. Test the researcher's claim at α = 0.01.
Is it possible to provide a meaningful interpretation of the intercept of the sample regression line? Explain.
Convert the given fraction into its other two forms? Evaluate expression. Use a calculator to check.
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
Explain which indicate that changes in the concentration of carbon dioxide which cause changes in the global temperature
A local politician wants an estimate of the proportion of the population who support her fiscal policies. She wants the estimate to be within .06 of the true proportion. Assume a 95 percent level of confidence.
An animal trainer obtained the following data, given in seconds. Construct a histogram, frequency polygon, and ogives for the data, and analyze the results.
Assume you were in charge of advertising for an automotive dealership when the gas prices increased to $6 per gallon. Most of your cars are fuel-efficient, but you have two models that have extremely poor fuel economy
Company W is testing a sales software. Their salesforce of 500 people is divided into four regions: Northeast, Southeast, Central and West. Each sales person is expected to sell the same amount of products.
Show the graph of the probability density function for flight times. What is the probability that the flight will be no more than 5 minutes late?
Choose one of these tests and describe in your own words, the purpose of the test, any particular assumptions or limitations pertaining to the test, and provide an example where you could employ the test.
Suppose we have observations x1, x2, . . . , xn. Prove that the sum of deviations of the observations from their arithmetic mean is always equal to zero.
Hypothesis test for dependent samples and Has satisfaction with MHMR services changed since the January survey
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