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

question 11

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, there is evidence of a significant difference in the mean amount of time needed to learn Brand B and Brand C at the 5% level of significance.

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Definitions:

Na+

A symbol representing sodium ions, which are essential electrolytes in the body, playing key roles in nerve impulse conduction, muscle contraction, and fluid balance.

Plasma

The liquid component of blood in which blood cells are suspended, consisting largely of water, proteins, and dissolved substances.

Intracellular Cation

Positively charged ions found within the cells, playing critical roles in cell function, including in the generation of electrical impulses.

K+

Potassium ions, essential for various cellular functions including nerve signal transmission and muscle contraction.