In: Finance
Assume we know that the population standard deviation of income in the United States (σ) is $6,000. A labor economist wishes to test the hypothesis that average income for the United States equals $53,000. A random sample of 2500 individuals is taken and the sample mean is found to be $53,300. Test the hypothesis at the 0.05 and 0.01 levels of significance. Provide the p-value.
In: Statistics and Probability
Historically throughout the United States, families of four spend about $239 a week on groceries and food with a standard deviation of 50. Assume a random sample of 250 households is taken in the United States.
Q- If an even larger sample of 2500 households was taken and the SD remains the same, what is the new Standard Error of the estimate? Why did this occur?
In: Statistics and Probability
Assume we know that the population standard deviation of income in the United States (σ) is $12,000. A labor economist wishes to test the hypothesis that average income for the United States exceeds $64,000. A random sample of 900 individuals is taken and the sample mean is found to be $65,000. Test the hypothesis at the 0.05 level of significance. What is the p-value of the test statistic?
In: Statistics and Probability
An economics professor randomly selected 100 millionaires in the United States. The average age of these millionaires was 54.8 years. The population standard deviation is known to be 7.9 years. What is the 95% confidence interval for the mean age, of all United States millionaires? Interpret the confidence interval.
Point Estimate: ______
Critical Value:
Margin of Error: ________
Confidence Interval:______
Interpretation:
In: Statistics and Probability
Currently, taking pictures or any type of video recording in the United States Supreme Court is not allowed. Discuss your thoughts and perspectives about allowing cameras in the United States Supreme Court during their hearings. What are the pros and cons about allowing cameras in the Court? Do you support putting cameras in the Court? Why or why not?
In: Psychology
Imports, exports, and the trade balance
The following table shows the approximate value of exports and imports for the United States from 1983 through 1987.
Complete the table by calculating the surplus or deficit both in absolute (dollar) terms and as a percentage of GDP. If necessary, round your answers to the nearest hundredth.

Source: "Income, Expenditures, Poverty, & Wealth: Gross Domestic Product (GDP)," United States Census Bureau, United States Department of Commerce, last modified September 2011, accessed June 10, 2013, https://www.census.gov/library/publications/2011/compendia/statab/131ed/income-expenditures-poverty-wealth.html.
Between 1984 and 1985, the _______ _______ in dollar terms and _______ as a percentage of GDP.
In: Economics
The maker of a line of toys featuring Thomas and Friends was insured by Ace American Insurance. The toy maker was sued in class action suits in the United States because of a recall of its toys for containing lead-based paint. The toys were made, painted, and tested in China. The insurance policy had a “coverage territory” exclusion which barred coverage of “occurrences” of bodily injury or property damage taking place in the United States. The defendants argued that the injuries took place in the United States, where they were exposed to the lead paint, not where the toys were manufactured and tested. Should the court interpret the policy to make the insurer defend the lawsuits? Why?
In: Economics
In: Economics
In: Economics