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

question 73

Multiple Choice

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 is the null hypothesis for testing the block effects?

• A) H₀: μA = μB = μC
• B) H₀: μ₁ = μ₂ = μ₃ = μ₄ = μ₅
• C) H₀: MA = MB = MC
• D) H₀: M₁ = M₂ = M₃ = M₄ = M₅

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Definitions:

Tend And Befriend

A behavior exhibited predominantly by females as a response to stress, where they tend to nurture those around them and seek out social support.

Fight-Or-Flight Response

A physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival.

Social Support

The assistance and comfort received from friends, family, and others, acting as a buffer against adverse life events and stress.

Stress Hormones

Hormones, including cortisol and adrenaline, that are released into the body in response to stress, affecting the body's metabolism and immune response.