Questions from Business Statistics

Q: What are the “obvious conclusions” from the hypothesis tests in

What are the “obvious conclusions” from the hypothesis tests in the regression output?

Q: Refer to the data for problem 6. a. Find

Refer to the data for problem 6. a. Find the critical value from the F table at the 10% level and report the result of the F test at this level. b. Summarize what this F test has told you about the co...

Q: Table 4.3.1 provides a list of the amounts

Table 4.3.1 provides a list of the amounts that your regular customers spent on your products last month: a. Find the average sales per regular customer. b. Find the median and quartiles. c. Draw the...

Q: Consider the Internet advertising budgets from problem 1, but expressed in

Consider the Internet advertising budgets from problem 1, but expressed in European euros instead of U.S. dollars. Use the exchange rate listed in a recent issue of The Wall Street Journal or another...

Q: Mutual funds that specialize in the stock of natural resources companies showed

Mutual funds that specialize in the stock of natural resources companies showed considerable variation in their performance during the 12-month period ending July 2010. Consider the Rate of Return col...

Q: Many countries (but not the United States) have a “

Many countries (but not the United States) have a “value added tax” that is paid by businesses based on how much value they add to a product (e.g. the difference be...

Q: Consider the yields (as an interest rate, in percent per

Consider the yields (as an interest rate, in percent per year) of municipal bonds, as shown in Table 3.8.1. a. Construct a histogram of this data set. b. Based on the histogram, what values appear to...

Q: Business firms occasionally buy back their own stock for various reasons,

Business firms occasionally buy back their own stock for various reasons, sometimes when they view the market price as a bargain compared to their view of its true worth. It has been observed that the...

Q: Consider the percentage change in stock price of the most active issues

Consider the percentage change in stock price of the most active issues traded on the NASDAQ stock exchange, as shown in Table 3.8.3. a. Construct a histogram of this data set. b. Describe the distrib...

Q: Consider CREF, the College Retirement Equities Fund, which manages retirement

Consider CREF, the College Retirement Equities Fund, which manages retirement accounts for employees of nonprofit educational and research organizations. CREF manages a large and diversified portfolio...