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:

Sonography

A diagnostic medical procedure that uses high-frequency sound waves (ultrasound) to create images of organs, tissues, or blood flow inside the body.

Sound Waves

Mechanical waves that are an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing.

Internal Structures

The complex parts or components located inside an organism, machine, or building, essential to its function or integrity.

Dosimeter

A device that measures exposure to ionizing radiation, such as X-rays, alpha rays, beta rays, and gamma rays.