T/F The Mann-Whitney test is used to test the equality of means from two sample
groups.
Give this one a try later!
False
Mann-Whitney is used when comparing medians from two sample groups
because it is a nonparametric test.
,T/F Kanban is used in conjunction with pull systems to align the inventory of products
or materials and ensure that they are available on time at the right place.
Give this one a try later!
True
Kanban provides production, conveyance, and delivery information. A
kanban system will not allow any goods to be moved within the facility
without an appropriate kanban (or signal) attached to the goods. Kanban is
the technique used to pull products and material/information through and
into the Lean manufacturing system/Lean office.
A plant manager wants to determine which raw materials supplier he should pick for a
new product line that is coming out. After doing research, the plant manager
collected some data on the delivery cycle time for each supplier. Supplier A's mean
cycle time is 2 days, and Supplier B's mean cycle time is 3 days. What is the alternative
hypothesis for this example?
A) The mean cycle time for Supplier A is equal to 2 days.
B) The mean cycle time for Supplier B is not equal to 3 days.
C) The population mean cycle time for Supplier A is equal to the population mean
cycle time for Supplier B.
D) The population mean cycle time for Supplier A is not equal to the population mean
cycle time for Supplier B.
Give this one a try later!
, D
The plant manager is comparing two suppliers in terms of their delivery
cycle times. The null hypothesis states that the population mean cycle time
for Supplier A equals the population mean cycle time for Supplier B. The
alternative hypothesis states that the population mean cycle time for
Supplier A ǂ the population mean cycle time for Supplier B.
In which of the following cases is it best to use multiple linear regression (MLR)?
A) Assessing whether or not one dependent variable can be predicted from a set of
independent variables
B) Determining how much variance in a dependent variable can be explained by
independent variables
C) When the BB does not know which independent variables will create the best
prediction
D) All of the above
Give this one a try later!
D
When there is one dependent variable (Y) and one independent variable
(X), we use simple linear regression to predict the value of Y. In case of
more than one independent variable (X), we need to use multiple linear
regression. Also, because we do not know which independent variable (X)
will have a significant impact on Y, this needs to be checked using multiple
regression. It is used to determine how much variance in a dependent
variable can be explained by multiple independent variables.
Which hypothesis test would you use when you want to compare median scores of
two dependent samples of a dependent variable that is not normally distributed?
*Mood's median test
, *2-sample t-test
*Wilcoxon sign test
*Chi-square test
Give this one a try later!
Wilcoxon sign test
The Wilcoxon signed-rank test or Wilcoxon sign test is a no-parametric
analysis that statistically compares the medians of two dependent samples
and assesses for significant differences. The Wilcoxon sign test is the
nonparametric alternative of the dependent samples t-test or paired-t test.
T/F When conducting a hypothesis test, sample size does not contribute to the
confidence interval of the test, regardless of the type of data.
Give this one a try later!
False
The sample size plays a significant role in the confidence or confidence
interval. Larger samples provide better results by decreasing the width of
CI and reducing the standard error.
T/F A process can be defined as a series of actions or steps taken to achieve a
particular end.
Give this one a try later!
True
A process is a sequence of interdependent and linked procedures that, at
every stage, consume one or more resources (employee time, energy,
machines, money) to convert inputs (data, material, parts) into outputs.
groups.
Give this one a try later!
False
Mann-Whitney is used when comparing medians from two sample groups
because it is a nonparametric test.
,T/F Kanban is used in conjunction with pull systems to align the inventory of products
or materials and ensure that they are available on time at the right place.
Give this one a try later!
True
Kanban provides production, conveyance, and delivery information. A
kanban system will not allow any goods to be moved within the facility
without an appropriate kanban (or signal) attached to the goods. Kanban is
the technique used to pull products and material/information through and
into the Lean manufacturing system/Lean office.
A plant manager wants to determine which raw materials supplier he should pick for a
new product line that is coming out. After doing research, the plant manager
collected some data on the delivery cycle time for each supplier. Supplier A's mean
cycle time is 2 days, and Supplier B's mean cycle time is 3 days. What is the alternative
hypothesis for this example?
A) The mean cycle time for Supplier A is equal to 2 days.
B) The mean cycle time for Supplier B is not equal to 3 days.
C) The population mean cycle time for Supplier A is equal to the population mean
cycle time for Supplier B.
D) The population mean cycle time for Supplier A is not equal to the population mean
cycle time for Supplier B.
Give this one a try later!
, D
The plant manager is comparing two suppliers in terms of their delivery
cycle times. The null hypothesis states that the population mean cycle time
for Supplier A equals the population mean cycle time for Supplier B. The
alternative hypothesis states that the population mean cycle time for
Supplier A ǂ the population mean cycle time for Supplier B.
In which of the following cases is it best to use multiple linear regression (MLR)?
A) Assessing whether or not one dependent variable can be predicted from a set of
independent variables
B) Determining how much variance in a dependent variable can be explained by
independent variables
C) When the BB does not know which independent variables will create the best
prediction
D) All of the above
Give this one a try later!
D
When there is one dependent variable (Y) and one independent variable
(X), we use simple linear regression to predict the value of Y. In case of
more than one independent variable (X), we need to use multiple linear
regression. Also, because we do not know which independent variable (X)
will have a significant impact on Y, this needs to be checked using multiple
regression. It is used to determine how much variance in a dependent
variable can be explained by multiple independent variables.
Which hypothesis test would you use when you want to compare median scores of
two dependent samples of a dependent variable that is not normally distributed?
*Mood's median test
, *2-sample t-test
*Wilcoxon sign test
*Chi-square test
Give this one a try later!
Wilcoxon sign test
The Wilcoxon signed-rank test or Wilcoxon sign test is a no-parametric
analysis that statistically compares the medians of two dependent samples
and assesses for significant differences. The Wilcoxon sign test is the
nonparametric alternative of the dependent samples t-test or paired-t test.
T/F When conducting a hypothesis test, sample size does not contribute to the
confidence interval of the test, regardless of the type of data.
Give this one a try later!
False
The sample size plays a significant role in the confidence or confidence
interval. Larger samples provide better results by decreasing the width of
CI and reducing the standard error.
T/F A process can be defined as a series of actions or steps taken to achieve a
particular end.
Give this one a try later!
True
A process is a sequence of interdependent and linked procedures that, at
every stage, consume one or more resources (employee time, energy,
machines, money) to convert inputs (data, material, parts) into outputs.
