When carrying out a t test for independent means

A) the medians of the two populations are assumed to be equal.
B) the null hypothesis is rejected if the computed t score is more extreme than the cutoff t score.
C) only the .01 significance level should be used because of the greater power compared to a t test for dependent means.
D) only the .10 significance level should be used because of the assumption that the variances of the two distributions should be equal.

B

Psychology

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First, he holds the length of the string and the amount of weight constant and varies the height at which oscillation is started then he moves on to examining the other variables. Frank is in which stage of Piaget's cognitive developmental theory? A) sensorimotor stage B) preoperations C) concrete operations D) formal operations

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According to your text, what is the drawback of tests that measure development in the first 2 years?

A) They tend to overestimate later rates of impairment in such children. B) They tend to underestimate later rates of impairment in such children. C) They do not assess fine motor skills in children. D) They use language that children under the age of 2 are not capable of understanding.

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