For the Distribution in the Following Table,what Is the Percentile $$\begin{array} { l c } \mathrm { X } & \mathrm { c } \% \\9 & 100 \% \\8 & 80 \% \\7 & 50 \% \\6 & 25 \% \\\hline\end{array}$$

question 11

Multiple Choice

For the distribution in the following table,what is the percentile rank for X = 8.5?? $$\begin{array} { l c } \mathrm { X } & \mathrm { c } \% \\9 & 100 \% \\8 & 80 \% \\7 & 50 \% \\6 & 25 \% \\\hline\end{array}$$

• A)X = 90%?
• B)?X = 80%
• C)?X = 65%
• D)?X = 50%

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Definitions:

Double-Masked Design

Experimental procedure in which neither the participant nor the experimenter knows whether the participant has received the experimental treatment or a placebo.

Manipulated

Being controlled or influenced in a clever and often unfair or selfish way.

Experiment

A research procedure in which a variable is manipulated and the effect of the manipulation is observed.

Observational Study

A type of research in which the investigator observes and records behavior or outcomes without manipulating the study environment or subjects.