If two groups of numbers have the same mean, then
a. their standard deviations must also be equal.
b. their medians must also be equal.
c. their modes must also be equal.
d. other measures of location need not be the same.
Question 2
Decision variables
a. tell how much or how many of something to produce, invest, purchase, hire, etc.
b. represent the values of the constraints.
c. measure the objective function.
d. must exist for each constraint.