We want to demonstrate that a relationship exists between optimism and happiness. We are not concerned with trying to demonstrate that one variable causes the other. What type of statistical test can be use to see if a relationship exists between the variables?
a. correlation
b. independent samples t-test
c. power analysis
d. one way ANOVA
Question 2A correlation was computed between amount of exercise people do and people's overall happiness. A significant correlation was found, such that the more people exercise, the happier they are. What is the best conclusion to draw from this finding?
a. Exercise leads people to be happy.
b. We have proved that people should exercise more.
c. A positive relationship exists between exercise and happiness.
d. A negative relationship exists between exercise and happiness.
Question 3Professor Falls wants to determine if there is a relationship between frequent hearing of a startle stimulus and hearing loss. He ran a regression and obtained an r value of .60. Which of the following best summarizes what this result means?
a. 60 of hearing loss is accounted for by frequency of hearing startle stimuli.
b. 36 of the variability in hearing loss can be accounted for by variability in the hearing of startle stimuli.
c. 36 of startle stimuli cause hearing loss.
d. 60 of hearing loss is caused by startle stimuli.
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