Inter-enterprise information systems are information systems that are shared by two or more independent departments within an organization

The Department of Transportation would like to investigate if a difference exists in the proportion of flights that arrive on-time between Alaska Airlines, Delta Airlines, Southwest Airlines, and United Airlines

The following data represent the number of on-time flights from random samples taken from each airline. Alaska Delta Southwest UnitedNumber On-time 90 95 85 60Sample Size 100 120 100 80The expected frequency of on-time flights from the Delta sample is ________.A) 66 B) 82.5 C) 90 D) 99

When practicing for a presentation: a. memorize the entire message

b. avoid using slides or an outline to help you remember points. c. display the visual aids you plan to use in the presentation. d. All the above