Questions Uploads
For a two-tailed independent-measures t test with sample
sizes 7 and 5, the 99% confidence interval for the population mean difference is -1 < μ1 – μ2 < 9. If M 1= 31, find M2 and SM1 – M2 .
Two samples each have n = 4 scores. If the first sample has a variance
of 10 and the second sample has a variance of 6, what is the estimated standard error for the sample mean difference?
An independent-measures study produces sample means of M 1 = 20 and
M 2 = 17. If both samples have n = 18 scores and Cohen’s d = 0.50, what is the value for the pooled variance?
Explain the polarizing forces of social issues displayed on social
networks like Facebook, using Social Identity Theory. What mechanisms allow this to play out like this?
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