Author Question: A marketing research application uses the variable HD to represent the number of homeowners ... (Read 36 times)

erika · **on:** Jun 24, 2018

A marketing research application uses the variable HD to represent the number of homeowners interviewed during the day. The objective function minimizes the cost of interviewing this and other categories and there is a constraint that HD 100 . The solution indicates that interviewing another homeowner during the day will increase costs by 10.00 . What do you know?
a. the objective function coefficient of HD is 10.
b. the dual price for the HD constraint is 10.
c. the objective function coefficient of HD is -10.
d. the dual price for the HD constraint is -10.

Question 2

A random sample of 16 students selected from the student body of a large university had an average age of 25 years. We want to determine if the average age of all the students at the university is significantly different from 24 . Assume the distribution of the population of ages is normal with a standard deviation of 2 years. At a .05 level of significance, it can be concluded that the mean age is _____.
a. not significantly different from 24
b. significantly different from 24
c. significantly less than 24
d. significantly less than 25