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

question 155

Essay

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, what are the degrees of freedom of the randomized block F test for the difference in the means at a level of significance of 0.05?

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Definitions:

Anomeric Carbon

The carbon atom in a cyclic saccharide that is connected to two oxygen atoms, one in an ether linkage and the other in a hydroxyl group, and its configuration determines the alpha or beta form of the saccharide.

Glycoside

A molecule in which a sugar is bound to another functional group or molecule through a glycosidic bond.

D-Aldopentose

A type of aldopentose, which is a 5-carbon sugar with an aldehyde group, having the 'D' configuration.

Alditol

A type of sugar alcohol resulting from the reduction of an aldose, wherein the aldehyde group is converted into a hydroxyl group.