Babe Ruth’s 1931 salary was $80,000. Government statistics show a consumer price index of 15.2 for 1931 and 214.5 for 2009. Ruth’s 1931 salary was equivalent to a 2009 salary of about
The following data give the dates of successive turning poin…
The following data give the dates of successive turning points in U.S. economic activity and the corresponding levels of real GDP at their time:Which of the following periods is a recession?
What might cause a rightward shift of the supply curve?
What might cause a rightward shift of the supply curve?
If the value of money equals 1/8, the price level equals: …
If the value of money equals 1/8, the price level equals:
If the actual rate of unemployment equals the natural rate o…
If the actual rate of unemployment equals the natural rate of unemployment, then:
If Country A and Country B have the same population, then th…
If Country A and Country B have the same population, then the standard of living in Country A will be ______ the standard of living in country B.
TABLE 13-01A large national bank charges local companies for…
TABLE 13-01A large national bank charges local companies for using their services. A bank official reported the results of a regression analysis designed to predict the bank’s charges (Y) — measured in dollars per month — for services rendered to local companies. One independent variable used to predict service charge to a company is the company’s sales revenue (X) — measured in millions of dollars. Data for 21 companies who use the bank’s services were used to fit the model: Y = β0 + β1X+εThe results of the simple linear regression are provided below. = -2,700 + 20X, SYX = 65, two-tailed p value = 0.034 (for testing β1)Referring to Table 13-1, a 95% confidence interval for β1 is (15, 30). Interpret the interval.
A regression analysis between weight (y in pounds) and heigh…
A regression analysis between weight (y in pounds) and height (x in inches) resulted in the following least squares line: = 120 + 5x. This implies that if the height is increased by 1 inch, the weight is expected to:
TABLE 13-6The following EXCEL tables are obtained when “Scor…
TABLE 13-6The following EXCEL tables are obtained when “Score received on an exam (measured in percentage points)” (Y) is regressed on “percentage attendance” (X) for 22 students in a Statistics for Business and Economics course. Referring to Table 13-6, which of the following statements is true?
TABLE 13-2A candy bar manufacturer is interested in trying t…
TABLE 13-2A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 6 small cities and offers the candy bar at different prices. Using candy bar sales as the dependent variable, the company will conduct a simple linear regression on the data below: SUMMARY OUTPUT Regression Statistics Multiple R 0.885404 R Square 0.783941 Adjusted R Square 0.729926 Standard Error 16.29861 Observations 6 ANOVA df SS MS F Significance F Regression 1 3855.422 3855.422 14.51346 0.018946 Residual 4 1062.578 265.6446 Total 5 4918 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% Intercept 161.3855 26.16069 6.16901 0.003506 88.75183 234.0193 88.75183 234.0193 price -48.1928 12.65017 -3.80965 0.018946 -83.3153 -13.0703 -83.3153 -13.0703 Referring to the above Table, to test whether a change in price will have any impact on average sales, what would be the critical values? Use α = 0.05.