If an experimenter conducts a t test for independent means and rejects the null hypothesis, the correct interpretation is that

A) the samples were from populations that were actually dependent rather than independent.
B) the variance of one sample is so much larger than the variance of the other sample that the variances of the parent populations must not have been the same after all.
C) the mean of one sample is so far from the mean of the other sample that the samples must come from populations with different means.
D) the mean of one sample is statistically the same as the mean of the other sample, so they probably come from populations with equal means.

Ans: C) the mean of one sample is so far from the mean of the other sample that the samples must come from populations with different means.

Psychology

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Seven-year-old John has an overly optimistic idea about how good he is at soccer. As be grows older, his self-perception will likely become:

a. more realistic b. even more optimistic, but only if his parents reinforce his positive self-view c. even more optimistic, but only if he actually gets better d. even more optimistic, but only if he plays on a team that includes both boys and girls

Psychology

A series of actions molded into a smooth and efficient performance is called a

a. motor skill. b. motor program. c. kinesthetic analysis. d. task analysis schedule.

Psychology