Which of the following is an example of a situation in which you could conduct a t test for independent means?
A)A comparison of the SAT scores of a group of 10 students who completed a special SAT preparation course compared to how people do on the SAT in general.
B)A comparison of scores of participants in a memory study in which one group learns the words in alphabetical order and another group learns the words in order of word length.
C)A comparison of participants' scores on a skills test before and after attending a training session for improving the skill.
D)None of the above would be suitable for a t test for independent means.

Question

Quizplus · Accepted Answer

A t test for independent means is used when comparing the means of two different groups that are not related to each other (i.e. independent). In option B, there are two groups (one that learns the words in alphabetical order and the other in order of word length) that are not related to each other, making it suitable for a t test for independent means. Option A could use a t test, but it would be a t test for dependent means as it involves comparing the performance of the same group before and after a treatment (the SAT preparation course). Option C would also use a t test, but it would be a paired t test as it involves comparing the scores of the same group before and after a training session. Option D is not suitable for a t test for independent means as it does not involve comparing two different groups.

Which of the Following Is an Example of a Situation