Chapter 10: The r-test for two independent samples 40.) All of the following are

Question

Chapter 10: The r-test for two independent samples 40.) All of the following are assumptions of a two-sample, independent measures t-t est EXCEPT, a. observations within each sample are independent b. the two populations that were sampled from are normal c. the two populations that were sampled from have equal variances (homogeneity) d. the two populations that were sampled from have unequal variances (heterogeneity) 41.) With respect to i-tests, within-subjects designs utilizing the I-statistic: a. include one sample, in which each participant is measured more than once b. include one sample, in which each participant is measured only once c. include two samples, in which each participant is measured more than once d. include two samples, in which each participant is measured only once

Explanation / Answer

Solution: 40.) All of the following are assumptions of a two-sample, independent measures t-test EXCEPT:

Answer: Option D is correct. the two populations that were sampled from have unequal variances (heterogeneity)

41.) With respect to t-tests, within-subjects designs utilizing the t-statistic:

Answer: Option A is correct. include one sample, in which each participant is measured more than once.

42.) With respect to t-tests, between-subjects designs utilizing the t-statistic:

Answer: Option D is correct. include two samples, in which each participant is measured only once.

43.) All of the following apply to the concept of pooled variance EXCEPT:

Answer: Option D is correct. it is used in within-subjects t-tests.

44.) A primary disadvantage of repeated measures t-test is:

Answer: Option B is correct. the order in which treatments are presented may influence the treatment effect.

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