psyc 210 HOMEWORK 5

psyc 210 HOMEWORK 5 - HOMEWORK 5 DUE WEEK of MONDAY 31st...

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HOMEWORK 5 DUE WEEK of MONDAY 31st Please show all of your work on a separate sheet. 1. Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking – even if they are not exposed to the usual pattern of sunlight. To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time. They could turn the lights on and off as they wished. After a month in the room, each individual tended to develop a steady cycle. Their cycles at the end of the study were as follows: 25, 27, 25, 23, 24, 25, 26, and 25. Using the 5% level of significance, what should we conclude about the theory that 24 hours is the natural cycle? (That is, does the average cycle length under these conditions differ significantly from 24 hours?) (a) Use the steps of hypothesis testing.
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This note was uploaded on 04/26/2008 for the course PSYC 210 taught by Professor Chow during the Spring '08 term at UNC.

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psyc 210 HOMEWORK 5 - HOMEWORK 5 DUE WEEK of MONDAY 31st...

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