State the management decision problems that might be addressed through the following market research exercises.
a. Evaluate the effectiveness of campaigns in which leaflets are left at household doors.
b. Evaluate whether introducing double sales-employee staffing would positively or negatively affect sales over weekends.
c. Evaluate the potential demand if metropolitan branches of a university located in the capital were to be opened.
d. Evaluate the impact on product sales if the decision were made to change the packaging to wholly recyclable materials.
e. Evaluate the different sales and marketing channels used to determine which provides the business with the greatest revenue streams.