A) The 2-Sample t-test is appropriate.We reject the null hypothesis and conclude

Question

A) The 2-Sample t-test is appropriate.We reject the null hypothesis and conclude that there is a changein the violent crimerate.

B) The 2-Sample t-test is appropriate.We fail to reject the null hypothesis and conclude that there isno change in the violent crimerate.

C) The paired t-test is appropriate. Wefail to reject the null hypothesis and conclude that there is nochange in the violent crimerate.

D) The paired t-test is appropriate. Wereject the null hypothesis and conclude that there is no change inthe violent crimerate.

E) The paired t-test is appropriate. Wereject the null hypothesis and conclude that there is a change inthe violent crimerate.

Explanation / Answer

B) The 2-sample t-test is appropriate. We fail to reject the nullhypothesis and conclude that there is no change in the violentcrime rate. Since the sample taken from 2000 is different from 1990. Thesamples should be SRS's.

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