A Study Was Conducted to Look at Whether Caffeine Improves

question 20

Multiple Choice

A study was conducted to look at whether caffeine improves productivity at work in different conditions. There were two independent variables. The first independent variable was email, which had two levels: 'email access' and 'no email access'. The second independent variable was caffeine, which also had two levels: 'caffeinated drink' and 'decaffeinated drink'. Different participants took part in each condition. Productivity was recorded at the end of the day on a scale of 0 (I may as well have stayed in bed) to 20 (wow! I got enough work done today to last all year) .
- Looking at the group means in the table below, which of the following statements best describes the data? $$\begin{array} { | l | l | l | } \hline & \text { Decaffeinated Drink } & \text { Caffeinated Drink } \\\hline \text { No Email } & 12.08 & 19.83 \\\hline \text { Email } & 11.98 & 5.49 \\\hline\end{array}$$

• A)There is likely to be a significant main effect of caffeine.
• B)A significant interaction effect is likely to be present between caffeine consumption and email access.
• C)The effect of email is relatively unaffected by whether the drink was caffeinated.
• D)The effect of caffeine is about the same regardless of whether the person had email access.

Explain the concept of isostasy and its importance in geology.

Understand the principle of the lithosphere and asthenosphere.

Comprehend the difference between continental and oceanic crust in terms of composition and thickness.

Understand the physiological and psychological responses of the body to stress.

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Definitions:

Joint Stock Company

A form of business organization in which capital is divided into shares owned by shareholders, who enjoy limited liability and whose investment in the company can be bought and sold.

Manager-Managed

A management structure typically used in a Limited Liability Company (LLC) where one or more appointed managers are responsible for the company's day-to-day operations, as opposed to being member-managed.

Limited Liability Company

A business organization strategy that harmonizes the limited liability advantage of a corporation with the taxation simplicity of a partnership or sole proprietorship.

Operations Participation

The involvement or engagement in the ongoing activities or processes of an organization, project, or system.