In this paper threats comparison, student-t distribution approach: A case study of Ibrahim Babangida library of Modibbo Adama University of Technology, Yola, We identified three threats; human threats, Technological threats and Natural threats. Data on threats were obtained using questionnaire and personal interview; the data obtained were analyzed using Analytic hierarchy Process (AHP) and studet-t distribution. The results obtained revealed that human threats effect is greater than technological threats and technological threats effect is greater than natural threats effect associated with IBL activities at 5% level of significance. We recommended that the management should invest more resources to mitigate human threats than other threat.