20) A researcher believes that dogs will learn to do tricks for peanut butter more quickly than compared to Milkbones. The researcher selects a sample of dogs from a local animal training school, and randomly separates them into two groups. Sixteen dogs received peanut butter after completing a trick and took an average of 114 trials (SD = 17) to learn the trick, while the remaining 16 dogs took an average of 125 trials (SD = 21) with Milkbones to learn the trick. Is there evidence to support the researcher's prediction? Where these results meaningful?

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