Walden University COLLEGE OF MANAGEMENT AND TECHNOLOGY This is to certify that the doctoral dissertation by William Yaw Adufutse has been found to be complete and satisfactory in all respects, and that any and all revisions required by the review committee have been made. Review Committee Dr. James Schiro, Committee Chairperson, Applied Management and Decision Sciences Faculty Dr. Thea Singer, Committee Member, Applied Management and Decision Sciences Faculty Dr. Lilburn Hoehn, Committee Member