Statistics - All Topics
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Here is the problem:
An experiment was performed to measure the effect of sleep deprivation on cognitive performance. twenty college juniors were randomly selected from a group of volunteers and arbitrarily assigned either to a sleep deprivation group or to a control group. The participants in the sleep deprivation group were kept awake for 24 hours; the members of the control group had a normal night's sleep. Participants were then asked to perform a simple mental arithmetic task, and the time it took each participant to complete the task was recorded. The results were as follows:
Sleep Deprivation Group
(Time in seconds)
10
15
13
5
27
7
16
20
21
13
Control Group
(No sleep deprivation)
(Time in seconds)
13
8
14
11
8
7
2
2
17
5
Determine whether or not the groups differ significantly. if you reject the null hypothesis, tell what it means in the context o the problem. Give the table values for significance.
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