Question

In: Statistics and Probability

Bob is a student at the Univeristy of Arizona. Bob is conducting a study to see...

Bob is a student at the Univeristy of Arizona. Bob is conducting a study to see the effects of horror films on stress levels of University of Arizona students. Bob brings 20 undergraduates from his stats class into a lab and randomly assigns them into one of two groups. The first group watches a horror film while the second group watches YouTube videos of kittens. While viewing the videos, Bob measures the heart rates of his participants as a measure of stress.

A) What type of study is this? (Choose either correlational, experimental, or quasi-experimental)

B) what population is being studied?

C) what is the sample being used in this example?

D) what is the dependent variable

E) What is the scale of measurement for the dependent variable? (Choose either Nominal, ordinal, interval, ratio)

F) What is the independent variable?

G) what is the scale of measurment for the independent variable (Choose either nominal, ordinal, interval or ratio)

Please answer all and thank you

Solutions

Expert Solution

A)

It is an experimental study

In an experimental study, the groups are set randomly and then one group receives the intervention (horror movies in this case). At the end of the experiment, the behavior of both groups is studied and any changes can be attributed to the intervention used

B) Population- Students of Arizona State University

C) Sample- 20 undergraduates from Bob's Stats class

D) Bob is conducting a study to see the effects of horror films on stress levels of University of Arizona students

Stress level is the dependent variable

E) Bob measures the heart rates as a measure of stress. So, the dependent variable is on the ratio scale of measurement

F) Effect of horror film is the independent variable

G) This is an ordinal variable as we can quantify the intensity but not come up with a particular number of differences between the horror movies and the kitten videos

Let me know if you need anything else, if not please don't forget to like the answer :)

orchestra answered 2 years ago
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