BUAL 2650 Regina Gramling Final Exam Questions Answered Correctly Latest Update
2025/2026
Explanatory variables - Answers Go into response variable (AKA the answer)
Predicted probability - Answers (e^profit hat)/(1-e^profit hat)
True or False: P=Po (null) - Answers True
Z statistic doesn't fall in the rejection region - Answers Don't reject
µ and P - Answers Mean and Proportion
t-test used when... - Answers its a small sample size and data is skewed
Ha (alternate hypothesis) < - Answers Value from the table is negative
Ha (alternative hypothesis) > - Answers 1- P value
Variance accounted for - Answers R^2
Variance not accounted for - Answers R^-2
If it is 2 tailed then P value is... - Answers Multiplied by 2
Confidence interval - Answers P hat +or- za/2 √((p hat(1-p hat))/n)
Type I error - Answers Reject null when its correct
Type II error - Answers Failing to reject null when it is incorrect
Multiple regression - Answers Multiple quantitive variables (explanatory)
Logistic regression - Answers Qualitative (independent and explanatory variable)
Linear regression - Answers Quantitative (both variables)
A/B - Answers Usually qualitative but can become quantitative (2 means)
2 mean degrees of freedom - Answers Df=n1+n2-2
Multiple regression null hypothesis - Answers Ho (null hypothesis) = B(variable)=0
Multiple regression alternative hypothesis - Answers Ha B(variable)≠ 0 (at least one variable
contributes)
If a variable contributes to multiple regression hypothesis - Answers P value (per variable) ≤ a
If it is in the rejection region... - Answers It is statistically significant
2025/2026
Explanatory variables - Answers Go into response variable (AKA the answer)
Predicted probability - Answers (e^profit hat)/(1-e^profit hat)
True or False: P=Po (null) - Answers True
Z statistic doesn't fall in the rejection region - Answers Don't reject
µ and P - Answers Mean and Proportion
t-test used when... - Answers its a small sample size and data is skewed
Ha (alternate hypothesis) < - Answers Value from the table is negative
Ha (alternative hypothesis) > - Answers 1- P value
Variance accounted for - Answers R^2
Variance not accounted for - Answers R^-2
If it is 2 tailed then P value is... - Answers Multiplied by 2
Confidence interval - Answers P hat +or- za/2 √((p hat(1-p hat))/n)
Type I error - Answers Reject null when its correct
Type II error - Answers Failing to reject null when it is incorrect
Multiple regression - Answers Multiple quantitive variables (explanatory)
Logistic regression - Answers Qualitative (independent and explanatory variable)
Linear regression - Answers Quantitative (both variables)
A/B - Answers Usually qualitative but can become quantitative (2 means)
2 mean degrees of freedom - Answers Df=n1+n2-2
Multiple regression null hypothesis - Answers Ho (null hypothesis) = B(variable)=0
Multiple regression alternative hypothesis - Answers Ha B(variable)≠ 0 (at least one variable
contributes)
If a variable contributes to multiple regression hypothesis - Answers P value (per variable) ≤ a
If it is in the rejection region... - Answers It is statistically significant
