The average number of hours for a random sample of mail order pharmacists from company A was 50.1 hours last year. It is believed that changes to medical insurance have led to a reduction in the average work week. To test the validity of this belief, the hypotheses are
a. H0: U > 50.1, Ha : U < 50.1.
b. H0: U = 50.1, Ha : U 50.1.
c. H0: U 50.1, Ha : U > 50.1.
d. H0: U 50.1, Ha : U < 50.1.
Q. 2Which of the following is true of the relationship between the value of the optimal integer solution and the value of the optimal solution to the LP Relaxation?
a. For integer linear programs involving minimization, the value of the optimal solution to the LP Relaxation provides an upper bound on the value of the optimal integer solution.
b. For integer linear programs involving maximization, the value of the optimal solution to the LP Relaxation provides a lower bound on the value of the optimal integer solution.
c. For integer linear programs involving minimization, the value of the optimal solution to the LP Relaxation provides a lower bound on the value of the optimal integer solution.
d. For any linear program involving either minimization or maximization, the value of the optimal solution to the LP Relaxation provides an infeasible value for the optimal integer solution.
Q. 3Larger values of have the disadvantage of increasing the probability of making a
a. Type I error.
b. Type II error.
c. random sampling error.
d. normal probability error.
Q. 4The optimal solution to the integer linear program will be an extreme point of the
a. convex hull.
b. objective contour.
c. cutting plane.
d. slope.
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