Arlene has conducted an experiment examining the effect of sleep on time spent procrastinating in students. She found that the fewer hours of sleep students had, the more they procrastinated on completing an assignment. The magnitude of the influence of sleep on procrastination is called:
A) The p-value
B) The alternative hypothesis
C) The effect size
D) The population mean

Question

Quizplus · Accepted Answer

The magnitude of the influence of sleep on procrastination is called effect size. Effect size measures the strength of the relationship between two variables, in this case, sleep and procrastination. The p-value is a statistical measure that tells you the probability of obtaining an effect as extreme as the one you observed, assuming that the null hypothesis is true. The alternative hypothesis is the statement that the researcher wants to support instead of the null hypothesis. The population mean is the average value of a variable in the entire population being studied.

Arlene Has Conducted an Experiment Examining the Effect of Sleep