Updating, querying, and presenting data from databases for operational purposes is known as:

A company plans to use an automatic guided vehicle for delivering mail to ten departments. The vehicle will begin from its docking area, visit each department, and return to the docking area

Cost is proportional to distance traveled. The type of network model that best represent this situation is ________. Fill in the blank with correct word.

The sales of a grocery store had an average of $8,000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether or not the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected. It was found that the average was $8,300 per day. From past information, it is known that the standard deviation of the

population is $1,200 . The correct null hypothesis for this problem is a. ? < 8000 b. ? > 8000 c. ? = 8000 d. ? > 8250