Questions from Applied Statistics

Q: If arrivals follow a Poisson distribution with mean 1.2 arrivals

If arrivals follow a Poisson distribution with mean 1.2 arrivals per minute, find the probability that the waiting time until the next arrival will be (a) less than 1.5 minutes; (b) more than 30 secon...

Q: Using the “Vail Guest Satisfaction Survey” data, construct a

Using the “Vail Guest Satisfaction Survey” data, construct a correlation matrix of the 11 independent variables. The response variable is ovalue. (a). Identify the four pairs of independent variable...

Q: Which would be “high leverage” observations? a

Which would be “high leverage” observations? a. Leverage hi = .15 in a regression with 5 predictors and 72 observations. b. Leverage hi = .18 in a regression with 4 predictors and 100 observations. c...

Q: Which violations of regression assumptions, if any, do you see

Which violations of regression assumptions, if any, do you see in these residual diagnostics? Explain.

Q: Vail Resorts asked a random sample of guests to rate their satisfaction

Vail Resorts asked a random sample of guests to rate their satisfaction on various attributes of their visit on a scale of 1–5 with 1 = very unsatisfied and 5 = very satisfied. The estimated regressio...

Q: A regression model to predict Y, the state-by-

A regression model to predict Y, the state-by-state 2005 burglary crime rate per 100,000 people, used the following four state predictors: X1 = median age in 2005, X2 = number of 2005 bankruptcies per...

Q: Inspect the residual plot to check for heteroscedasticity and report your conclusions

Inspect the residual plot to check for heteroscedasticity and report your conclusions. Midterm and Final Exam Scores for Business Statistics Students Fall Semester 2011 (n = 58 students) Midterm Exa...

Q: Refer to the ANOVA table below. (a) State the

Refer to the ANOVA table below. (a) State the degrees of freedom for the F test for overall significance. (b) Use Appendix F to look up the critical value of F for α = .05. (c) Calculate...

Q: Refer to the ANOVA table below. (a) State the

Refer to the ANOVA table below. (a) State the degrees of freedom for the F test for overall significance. (b) Use Appendix F to look up the critical value of F for α = .05. (c) Calculate...

Q: Refer to the ANOVA table below. (a) State the

Refer to the ANOVA table below. (a) State the degrees of freedom for the F test for overall significance. (b) Use Appendix F to look up the critical value of F for α = .05. (c) Calculate...