a) Is the judged quality of objects significantly different for self-purchases than for purchases made by others? Use a two-tailed test with = .05 b) Compute Cohen’s d to measure the size of the treatment effect
When you get a surprisingly low price on a product do you assume that you got a really good deal or that you bought a low-quality product? Research indicates that you are more likely to associate low price and low quality if someone else makes the purchase rather than yourself (Yan and Sengupta, 2011). In a similar study n = 16, participants were asked to rate the quality of low-priced items under two scenarios: purchased by a friend or purchased yourself. The results produced a mean difference of Mn = 2.6 and SS = 135, with self-purchases rated higher.
a) Is the judged quality of objects significantly different for self-purchases than for purchases made by others? Use a two-tailed test with = .05
b) Compute Cohen’s d to measure the size of the treatment effect
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