TABLE 11-8 An Important Factor in Selecting Database Software Is the Time

question 153

True/False

TABLE 11-8
An important factor in selecting database software is the time required for a user to learn how to use the system. To evaluate three potential brands (A, B and C) of database software, a company designed a test involving five different employees. To reduce variability due to differences among employees, each of the five employees is trained on each of the three different brands. The amount of time (in hours) needed to learn each of the three different brands is given below:

Below is the Excel output for the randomized block design:

-Referring to Table 11-8, the randomized block F test is valid only if the population of the amount of time needed has the same variance for the 3 brands.

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Definitions:

Cholecystokinin

A hormone that stimulates the digestion of fat and protein by prompting the release of digestive enzymes and bile from the pancreas and gallbladder, respectively.

Secretin

A hormone that stimulates the secretion of digestive juices from the pancreas and bile from the liver into the small intestine.

Ileocecal Sphincter

Thickening of circular smooth muscle between the ileum and the cecum, forming the ileocecal valve.

Peristaltic Contractions

Wave-like muscle contractions that occur in tubular structures of the body, such as the gastrointestinal tract, to move contents along.