Grace Period: 1 days left I Regis Chapter 1, Section 3, Exercise 102 Be Sure to
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Question
Grace Period: 1 days left I Regis Chapter 1, Section 3, Exercise 102 Be Sure to Get Your Beauty Sleep New research' supports the idea that people who get a good night's sleep look more attractive. In the study, 23 subjects ages 18 to 31 night's sleep and once after being kept awake for 31 hours. Hair make-up, clothing, and and the average rating under the two conditions was compared. The researchers report in the Bntish Medical Journal that "Our findings show that sleep-deprived people 'Stein, R., Beauty sleep no myth, study finds", Washington Post, washingtonpost.com, accessed December 15, 2010.Explanation / Answer
a) Here clearly as we are trying to find the attractiveness of the person based on the amount of sleep that a person gets. Therefore the amount of sleep here would be the explanatory variable and the attractivenss variable would be the response variable.
An explanatory variable helps to explain the variation in the response variable. Therefore final answers here are:
Explanatory variable: Amount of sleep
Response Variable: Attractiveness.
b) In an observational study the response variable is not under the control of the person doing the study, which is the case here as he cannot control the amount of sleep a person sleeps
Therefore this is an observational study
c) Here clearly as the researchers observed that there was an association and the sleep deprived people were less attractive than the ones who slept well. Therefore Yes we can because an association was found and that is enough is the correct answer here.
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