Chapter 7
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 .05 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. (b) Sketch the distributions involved, (c) Explain your answer to someone who has never taken a course in statistics.
Check your essay before you submit. See exactly what your professor sees.
See your AI and plagiarism results before your instructor does.Get the exact same report your professor uses. Trusted by 50,000+ students worldwide.
Welcome to one of the most trusted essay writing services with track record among students. We specialize in connecting students in need of high-quality essay writing help with skilled writers who can deliver just that. Explore the ratings of our essay writers and choose the one that best aligns with your requirements. When you rely on our online essay writing service, rest assured that you will receive a top-notch, plagiarism-free A-level paper. Our experienced professionals write each paper from scratch, carefully following your instructions. Request a paper from us and experience 100% originality.
From stress to success – hire a pro essay writer!
