Reference no: EM131236048

A sleep research team is interested in the effects of sleep deprivation on subjects' ability to perform a vigilance task, such as locating objects moving on a radar screen. They house their subjects in a sleep laboratory so that they can monitor their sleeping habits.

There are 4 conditions, namely, 4, 12, 20 and 28 hours without sleep. 4 subjects are randomly assigned to each of the conditions.

They are scored on the number of failures to spot objects on a radar screen during a 30-minute test period. Scores are presented below:

4hours	12hours	20hours	28hours
37	36	43	76
22	45	75	66
22	47	66	43
25	23	46	62

1. Enter the above data into an SPSS data file using informative variable and value labels as appropriate. Append or cut and paste a screen shot of your data file.

2. Using syntax with the glm command in SPSS, obtain descriptive statistics, perform the overall ANOVA and append the SPSS output. Report the significance of the overall test, assuming that EER is set at α=.05

3. Draw a conclusion concerning the overall test.

The following refers to the above data but is a separate question.

Assume that the research team had decided to test whether the amount of sleep deprivation was systematically related to missing objects on the radar screen by performing a trend analysis, controlling EER at α=.05. Use syntax with the glm command in SPSS to perform this analysis, append the output and answer the following questions.

4. Was a trend analysis appropriate in this design? Why or why not?

5. Interpret and draw conclusions about the results of the analysis you have performed, making explicit the decision rule you are using.

6. Contrast code the deprivation condition variable so that you can replicate the trend analysis above, perform the analysis via the regression command in SPSS and append the output.

Details on submitting your assignment:

- Please ensure that you include the syntax used (which will appear at the top of your output) when you append your output for the different components of the question.

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