Questions from Applied Statistics

Q: Using the “Metals” data, construct a correlation matrix of

Using the “Metals” data, construct a correlation matrix of the six independent variables. The response variable is Priceylb. (a). Identify any pairs of independent variables that have a significant p...

Q: (a) Perform a regression using MegaStat or Excel. (

(a) Perform a regression using MegaStat or Excel. (b) State the null and alternative hypotheses for a two-tailed test for a zero slope. (c) Report the p-value and the 95 percent confidence interval fo...

Q: (a) Perform a regression using MegaStat or Excel. (

(a) Perform a regression using MegaStat or Excel. (b) State the null and alternative hypotheses for a two-tailed test for a zero slope. (c) Report the p-value and the 95 percent confidence interval fo...

Q: (a) Based on the R2 and ANOVA table for your

(a) Based on the R2 and ANOVA table for your model, how would you assess the fit? (b) Interpret the p-value for the F statistic. (c) Would you say that your model’s fit is good enoug...

Q: A regression was performed using data on 32 NFL teams. The

A regression was performed using data on 32 NFL teams. The variables were Y = current value of team (millions of dollars) and X = total debt held by the team owners ( millions of dollars). (a) Write t...

Q: Which probability distribution (uniform, binomial, Poisson) is most

Which probability distribution (uniform, binomial, Poisson) is most nearly appropriate to describe each situation (assuming you knew the relevant parameters)? a. The number of dimes older than 10 yea...

Q: A regression was performed using data on 16 randomly selected charities.

A regression was performed using data on 16 randomly selected charities. The variables were Y = expenses (millions of dollars) and X = revenue (millions of dollars). (a) Write the fitted regression eq...

Q: Below is a regression using X = home price (000),

Below is a regression using X = home price (000), Y = annual taxes (000), n = 20 homes. (a) Write the fitted regression equation. (b) Write the formula for each t statistic and verify the t statistics...

Q: Below is a regression using X = average price, Y =

Below is a regression using X = average price, Y = units sold, n = 20 stores. (a) Write the fitted regression equation. (b) Write the formula for each t statistic and verify the t statistics shown bel...

Q: (a) Use Excel’s Data Analysis > Regression (or MegaStat

(a) Use Excel’s Data Analysis > Regression (or MegaStat or MINITAB) to obtain regression estimates. (b) Interpret the 95 percent confidence interval for the slope. Does it contain...