Question

Propose a new hypothesis that can be tested using an experiment. then, state which variable is your iv and which is your dv. be sure to clearly describe the two levels of your iv (i.e., the experimental and control conditions).

A) The effect of different music genres on concentration during study sessions.
B) The impact of caffeine intake on reaction time in a driving simulation.
C) The relationship between screen time before bedtime and the quality of sleep.
D) The influence of color temperature on employee productivity in an office setting.

Answer 1

The hypothesis is that increased screen time before bedtime negatively affects the quality of sleep. The independent variable is the screen time before bedtime and the dependent variable is the quality of sleep.

Step-by-step explanation:

For the question on proposing a new hypothesis for an experiment, I will choose option C) The relationship between screen time before bedtime and the quality of sleep.

The hypothesis could be: Increased screen time before bedtime negatively affects the quality of sleep.

In this hypothesis, the independent variable (IV) is the screen time before bedtime. The two levels of the IV are:
1. Experimental condition: Increased screen time before bedtime
2. Control condition: No screen time before bedtime

The dependent variable (DV) in this experiment is the quality of sleep.