A study tested the effects of science fiction movies on people's belief in the supernatural. A scale was designed to measure the degree that a person believes in the supernatural (high scores indicate high levels of belief). Seven participants completed the scale before and after watching a popular science fiction movie. Participants' scores are listed below. Assume that the researcher had reason to expect participants to believe less in the supernatural after watching the movie.
Belief-in-Supernatural Scores, Before and After Watching Science Fiction Movie
Carry out a t test for dependent means (using the .01 significance level).
a. Use the five steps of hypothesis testing.
b. Figure the effect size and find the approximate power of this study.

Question

A study tested the effects of science fiction movies on people's belief in the supernatural. A scale was designed to measure the degree that a person believes in the supernatural (high scores indicate high levels of belief). Seven participants completed the scale before and after watching a popular science fiction movie. Participants' scores are listed below. Assume that the researcher had reason to expect participants to believe less in the supernatural after watching the movie.
Belief-in-Supernatural Scores, Before and After Watching Science Fiction Movie
  Carry out a t test for dependent means (using the .01 significance level).
a. Use the five steps of hypothesis testing.
b. Figure the effect size and find the approximate power of this study.

Quizplus · Accepted Answer

The Answer of A study tested the effects of science fiction movies on people's belief in the supernatural. A scale was designed to measure the degree that a person believes in the supernatural (high scores indicate high levels of belief). Seven participants completed the scale before and after watching a popular science fiction movie. Participants' scores are listed below. Assume that the researcher had reason to expect participants to believe less in the supernatural after watching the movie.
Belief-in-Supernatural Scores, Before and After Watching Science Fiction Movie
  Carry out a t test for dependent means (using the .01 significance level).
a. Use the five steps of hypothesis testing.
b. Figure the effect size and find the approximate power of this study.

A Study Tested the Effects of Science Fiction Movies on People's