A team of researchers studied the effects of sleep deprivation on decay of short-term memory. Eight participants stayed in a lab for 2 days. Four were randomly assigned not to sleep during that period. The other four were allowed to sleep when they wanted to do so. At the end of the 2 days, the participants completed a short-term memory task. Here are the results:
Mean Time (Seconds)for Remembering
Based on these results, does sleep deprivation reduce short-term memory? (Use the.05 significance level.)
a. Use the five steps of hypothesis testing.
b. Sketch the distribution involved.
c. Figure the effect size. What can you say from a power perspective?
d. Explain what you did to a person who is familiar with the t test for a single sample but is unfamiliar with the t test for independent means.

Question

A team of researchers studied the effects of sleep deprivation on decay of short-term memory. Eight participants stayed in a lab for 2 days. Four were randomly assigned not to sleep during that period. The other four were allowed to sleep when they wanted to do so. At the end of the 2 days, the participants completed a short-term memory task. Here are the results:
Mean Time (Seconds)for Remembering
  Based on these results, does sleep deprivation reduce short-term memory? (Use the.05 significance level.)
a. Use the five steps of hypothesis testing.
b. Sketch the distribution involved.
c. Figure the effect size. What can you say from a power perspective?
d. Explain what you did to a person who is familiar with the t test for a single sample but is unfamiliar with the t test for independent means.

Quizplus · Accepted Answer

The Answer of A team of researchers studied the effects of sleep deprivation on decay of short-term memory. Eight participants stayed in a lab for 2 days. Four were randomly assigned not to sleep during that period. The other four were allowed to sleep when they wanted to do so. At the end of the 2 days, the participants completed a short-term memory task. Here are the results:
Mean Time (Seconds)for Remembering
  Based on these results, does sleep deprivation reduce short-term memory? (Use the.05 significance level.)
a. Use the five steps of hypothesis testing.
b. Sketch the distribution involved.
c. Figure the effect size. What can you say from a power perspective?
d. Explain what you did to a person who is familiar with the t test for a single sample but is unfamiliar with the t test for independent means.

A Team of Researchers Studied the Effects of Sleep Deprivation