In a survey of 280 qualified readers of Logistics Management, 62 responded that the "cloud" and Software as a Service (SaaS) is not an option for their firms, citing issues such as security and privacy concerns, system reliability and system performance, data integrity, and lack of control as the biggest concerns. (Data extracted from "2012 Supply Chain Software Users Survey: Spending Stabilizers," Logistics Management, May 2012, p. 38.) Construct a 95% confidence interval estimate for the population proportion of logistics firms for which the cloud and SaaS is not an option.