4/15/25, 10:46
AM
BUAL 2650 EXAM 3 ACTUAL QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
Terms in this set (69)
uses one independent quantitative variable to explain one dependent
simple linear regression
quantitative variable
uses two or more independent quantitative variables to describe a dependant
multiple regression
quantitative variable
logistic regression used for when the dependant (response) variable is qualitative and dichotomous
What is the natural logarithm of the odds The logit
called?
In logistic regression the dependent variable is categorical.
True or False: True
The dependent or response variable in a
logistic regression model can only take
on values of 0 and 1.
Logistic regressions is appropriate when dichotomous -has only two answers
the outcome or decision is
If we decide to not reject the null in a The results are not statistically significant at alpha = 0.01 and conclude the sample
business problem, what would be a good is the same as the hypothesized population average weight.
conclusion?
what is Uo if: Uo is 100
Based on a random sample of 25 Uo is the hypothesized population mean or what has happened in the past.
packages delivered by Opelika FedEx, the
average weight is 102 lbs. The FedEx
headquarters reports the historical
average weight is 100 lbs. Opelika FedEx
needs to decide if there is enough
evidence to establish their average
weight is greater than the hypothesized
average weight.
The______regression method is used logistic
when the response variable is a
qualitative or a categorical variable.
What two values does the dependent The dependent variable y representing 1 equals if the event of interest has
variable equal in logistic regression and occurred and 0 otherwise
what do these values represent?
1/
5
, 4/15/25, 10:46
AM
what are the degrees of freedom if: df: 24
Based on a random sample of 25 n-1
packages delivered by Opelika FedEx, the 25-1 = 24
average weight is 102 lbs. The FedEx
headquarters reports the historical
average weight is 100 lbs. Opelika FedEx
needs to decide if there is enough
evidence to establish their average
weight is greater than the hypothesized
average weight.
Which statistical test should be used if: One Mean hypothesis test
Based on a random sample of 25
packages delivered by Opelika FedEx, the
average weight is 102 lbs. The FedEx
headquarters reports the historical
average weight is 100 lbs. Opelika FedEx
needs to decide if there is enough
evidence to establish their average
weight is greater than the hypothesized
average weight.
Which statistical test should be used if: Linear Regression
The FedEx headquarters collects a
random sample to predict the number of
employees to hire during the holiday
season based on the number of packages
delivered last year.
The Null Hypothesis for testing the model B1=B2=B3=B4=B5=B6=B7=B8 Equals 0
is Ho: ________________
The Alternative Hypothesis for testing the At least one variable contributes to the model
model is Ha: ________________
What is the decision and conclusion for Reject the null hypothesis and conclude at least one variable contributes to the
the Model? model
What is the decision and conclusion for Do not reject the null hypothesis and conclude the variable Years does not
the variable "Years" ? contribute to the model
What is the null hypothesis to test the equals 0
variable "Runs": Ho: Beta _________
What is the alternative hypothesis to test does not equal 0
the variable "Runs": Ha: Beta _____________
For a multiple regression model, the null multi-collinearity
hypothesis is rejected when testing the
model but none of the variables
contribute. This is because ___________________ has
occurred.
Which of the following describes the first Remove the variable RBI because has the highest p-value
remodel suggestion for this model?
regression explained
residual error, unexplained
this is the sum of squares (SS) for regression, explained SSR
SSR
= SST - SSE
this is the sum of squares (SS) for the residual, error, unexplained
SSE
SSE = SST - SSR
this is the mean square (MS) for the regression, explained
MSR
SSR / k = MSR
2/
5
AM
BUAL 2650 EXAM 3 ACTUAL QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
Terms in this set (69)
uses one independent quantitative variable to explain one dependent
simple linear regression
quantitative variable
uses two or more independent quantitative variables to describe a dependant
multiple regression
quantitative variable
logistic regression used for when the dependant (response) variable is qualitative and dichotomous
What is the natural logarithm of the odds The logit
called?
In logistic regression the dependent variable is categorical.
True or False: True
The dependent or response variable in a
logistic regression model can only take
on values of 0 and 1.
Logistic regressions is appropriate when dichotomous -has only two answers
the outcome or decision is
If we decide to not reject the null in a The results are not statistically significant at alpha = 0.01 and conclude the sample
business problem, what would be a good is the same as the hypothesized population average weight.
conclusion?
what is Uo if: Uo is 100
Based on a random sample of 25 Uo is the hypothesized population mean or what has happened in the past.
packages delivered by Opelika FedEx, the
average weight is 102 lbs. The FedEx
headquarters reports the historical
average weight is 100 lbs. Opelika FedEx
needs to decide if there is enough
evidence to establish their average
weight is greater than the hypothesized
average weight.
The______regression method is used logistic
when the response variable is a
qualitative or a categorical variable.
What two values does the dependent The dependent variable y representing 1 equals if the event of interest has
variable equal in logistic regression and occurred and 0 otherwise
what do these values represent?
1/
5
, 4/15/25, 10:46
AM
what are the degrees of freedom if: df: 24
Based on a random sample of 25 n-1
packages delivered by Opelika FedEx, the 25-1 = 24
average weight is 102 lbs. The FedEx
headquarters reports the historical
average weight is 100 lbs. Opelika FedEx
needs to decide if there is enough
evidence to establish their average
weight is greater than the hypothesized
average weight.
Which statistical test should be used if: One Mean hypothesis test
Based on a random sample of 25
packages delivered by Opelika FedEx, the
average weight is 102 lbs. The FedEx
headquarters reports the historical
average weight is 100 lbs. Opelika FedEx
needs to decide if there is enough
evidence to establish their average
weight is greater than the hypothesized
average weight.
Which statistical test should be used if: Linear Regression
The FedEx headquarters collects a
random sample to predict the number of
employees to hire during the holiday
season based on the number of packages
delivered last year.
The Null Hypothesis for testing the model B1=B2=B3=B4=B5=B6=B7=B8 Equals 0
is Ho: ________________
The Alternative Hypothesis for testing the At least one variable contributes to the model
model is Ha: ________________
What is the decision and conclusion for Reject the null hypothesis and conclude at least one variable contributes to the
the Model? model
What is the decision and conclusion for Do not reject the null hypothesis and conclude the variable Years does not
the variable "Years" ? contribute to the model
What is the null hypothesis to test the equals 0
variable "Runs": Ho: Beta _________
What is the alternative hypothesis to test does not equal 0
the variable "Runs": Ha: Beta _____________
For a multiple regression model, the null multi-collinearity
hypothesis is rejected when testing the
model but none of the variables
contribute. This is because ___________________ has
occurred.
Which of the following describes the first Remove the variable RBI because has the highest p-value
remodel suggestion for this model?
regression explained
residual error, unexplained
this is the sum of squares (SS) for regression, explained SSR
SSR
= SST - SSE
this is the sum of squares (SS) for the residual, error, unexplained
SSE
SSE = SST - SSR
this is the mean square (MS) for the regression, explained
MSR
SSR / k = MSR
2/
5
