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 sleep deprived normal sleep 7 9 8 8 7 11 9 7 Based on these results, does sleep deprivation reduce short-term memory? (Use the .05 significance level. a) Use (and clearly label) the five steps of hypothesis testing. b) Calculate the effect size.

          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
sleep deprived
normal sleep
7
9
8
8
7
11
9
7
Based on these results, does sleep
deprivation reduce short-term memory? (Use the .05
significance level.
a)  Use (and clearly label) the five steps of hypothesis
testing.
b)  Calculate the effect size.

Added by Katherine P.

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