ishi and Shigehiro (2010) report that people who move from home to home frequently as children tend to have lower than average levels of well-being as adults. To further examine this relationship, a psychologist obtains a sample of n = 12 young adults who each experienced five or more different homes before they were 16 years old. These participants were given a standardized well-being questionnaire for which the general population has an average score of µ = 40. The well-being scores for this sample are as follows: 38, 37, 41, 35, 42, 40, 33, 33, 36, 38, 32, 39   On the basis of this sample, is well-being for frequent movers significantly different from well-being in the general population? Use a two-tailed test with α = .05. The null hypothesis is H₀:            .   Complete the following table. M SS s² sMM t Critical Values Significant?

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Oishi and Shigehiro (2010) report that people who move from home to home frequently as children tend to have lower than average levels of well-being as adults. To further examine this relationship, a psychologist obtains a sample of n = 12 young adults who each experienced five or more different homes before they were 16 years old. These participants were given a standardized well-being questionnaire for which the general population has an average score of µ = 40. The well-being scores for this sample are as follows:
38, 37, 41, 35, 42, 40, 33, 33, 36, 38, 32, 39
 
On the basis of this sample, is well-being for frequent movers significantly different from well-being in the general population? Use a two-tailed test with α = .05.
The null hypothesis is H₀:            .
 
Complete the following table.
M
SS
sMM
t
Critical Values
Significant?
 
 
                        

 

Compute the estimated Cohen’s d to measure the size of the difference. (Hint: Even if the formula for Cohen’s d produces a negative value, it should be reported as a positive number.)
 Cohen’s d =     
 
Complete the following sentence showing how the outcome of the hypothesis test and the measure of effect size would appear in a research report.
The results    that well-being scores for frequent movers    significantly    scores for the general population,    ,    ,    .
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