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A survey of Internet users reported that 20% downloaded music onto their computers. The filing of lawsuits by the recording industry may be a reason why this percent has decreased from the estimate of 27% from a survey taken two years before. Assume that the sample sizes are both 1451. Using a significance test, evaluate whether or not there has been a change in the percent of Internet users who download music. Provide all details for the test. (Round your value for zto two decimal places. Round your P-value to four decimal places.)
Z=
p-value=
Summarize the conclusion
Also report a 95% confidence interval for the difference in proportions. (Round your answers to four decimal places.) (_____,_____)
Explain what information is provided in the interval that is not in the significance test results.
Imagine a nonprofit organization trying to raise funds for cancer research. What types of strategic alternatives might such an organization develop?
For each of the following utility functions listed below. Write down the optimization problem, Determine whether you expect an interior or a corner solution,
calculate the change if the government, instead of reducing its purchases, increased autonomous net taxes by $10 billion.
Clearly explain the factors to consider as your "fixed factor" and alternative short term and long-term decisions. Submit your analysis in a one to three page paper.
q.the blair companys three assembly plants are located in california georgia and new jersey. previously the company
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Illustrate the use the orange points square symbols to plot the portion of the supply curve that corresponds to prices where there is positive output.
The unemployment rate measures only the fraction of the labor force searching for work. Sometimes economists are interested in the length of time that unemployed have been out of work. One convenient summary measure is the median duration of unemploy..
explain why airlines might be more likely to match price cuts than price increases. (b) Which theory of oligopolistic behavior does the above situation most resemble?
Katie's project has a five-year term, a first cost, no salvage value, and annual savings of $20 000 per year. After doing present worth and annual worth calculations with a 15% interest rate, Katie notices that the calculated annual worth for the pro..
Interest rate parity suggests that the difference in interest rates between two countries affects the change in exchange rates over time. While not a perfect predictor, it has been shown to be an unbiased predictor and has more explanatory power than..
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