Which type of test should be used to determine whether two sample means are sign

Question

Which type of test should be used to determine whether two sample means are significantly different? a) a general significance test b) a z-test c) a two-sample t-test d) a one-sample t-test If the samples in a two-sample test are related, the proper choice would be to do... a) an independent measures t-test b) a dependent measures t-test If the samples in a two-sample test are not related in any known way, it would be appropriate to do... a) an independent measures t-test b) a dependent measures t-test The estimated standard error of the difference (SE_D) is the standard deviation of the sampling distribution of differences between means. a) true b) false The estimated standard error of the mean (SE_M), the estimated standard error of the difference between means (SE_D), and the estimated standard error of the mean difference (SE_MD) are all measures of variability. a) true b) false A chi-square test of independence is used with ______ level data. a) nominal b) ordinal c) interval d) ratio The ______ states that a differences observed between samples are the result of chance factors. a) the central limit theorem b) the researcher's expectation c) the null hypothesis (Ho) d) the alternative hypothesis (Ha) We reject the null hypothesis when our statistical tests yield results that occur very, very rarely (e.g., only 5 times out of 100) by chance alone. a) true b) false

Explanation / Answer

1) Two sample t-test (option C)

2) a dependent measures t-test (option B)

3) an independent measures t-test (option A)

4) true

5) true

6) Nominal level data (option A)

7) Alternate hypothesis (option D)

8) True

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