An Experiment Was Done to Look at Whether Different Relaxation

question 12

Multiple Choice

An experiment was done to look at whether different relaxation techniques could predict sleep quality better than nothing. A sample of 400 participants were randomly allocated to one of four groups: massage, hot bath, reading or nothing. For one month each participant received the same relaxation technique for 30 minutes before going to bed each night. A special device was attached to the participant's wrist that recorded their quality of sleep, providing them with a score out of 100. The outcome was the average quality of sleep score over the course of the month.
-Which of the following tables displays the most appropriate coding scheme for analysing these data?

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Definitions:

Amyl Nitrate

A chemical compound used medicinally to treat angina and recreationally as a popper to induce a brief rush or sensation of euphoria.

Muscle Relaxant

A medication or substance that decreases muscle tone, reducing tension or stiffness in muscles.

Engorging

The process of being filled with blood, often used in the context of sexual arousal.

Eating Disorder

A range of psychological disorders characterized by abnormal or disturbed eating habits, which negatively affect a person's health.