DrWelsh Is Doing Experiments Using Drugs

question 9

Multiple Choice

Dr.Welsh is doing experiments using drugs.He is concerned that his subjects will respond to demand characteristics.He may want to control for this by using which of the following strategies?

• A)stratification
• B)two independent variables
• C)a placebo
• D)randomization

---

Definitions:

Time()

A function in many programming languages that returns the current time, often represented as the number of seconds since a predefined epoch.

Scaling

Scaling refers to the process of adjusting the size or capacity of a system or application to handle varying levels of demand.

Random Number

A number generated in such a way as to exhibit no predictable pattern or order, often used in computing to simulate chance or create variability in data processing.

Isalnum

A function in C that checks if a given character is an alphanumeric character (either a letter or a number).