1. Tdentifying independent sample designs Which of the following experiments use

Question

1. Tdentifying independent sample designs Which of the following experiments uses independent samples? Q You want to compare the mean SAT score of students who take a new SAT preparation course to that of students who don't take an SAT preparation course. Sq you compare the mean SAT score of a randomly selected group of students who took a new SAT preparation course to the mean SAT score of a randomly selected group of students who didn't take an SATI preparation course O You want to compare the mean number of years lived by chimpanzees that are raised in captivity and fed a strict vegan diet to nonvegan chimpanzees that are also raised in captivity. So you compare the mean number of years lived by a sample of chimpanzees that are raised in captivity and fed a strict vegan diet to the mean number of years lived by the vegan chimpanzees' siblings, that are also raised in captivity but not fed a strict vegan diet. You want to compare the depression levels of teenage girls before and after attending a weeklong camp focused on improving self-image. So you compare the mean Hamilton depression scores of a randomly selected group of teenage girls before and after they attend a weeklong camp focused on improving self-image. You want to compare the mean SAT score of a randomly selected group of students who took a new SAT preparation course to the national average SAT score.

Explanation / Answer

here first and 4th option uses independent sample as subjects are indpendent of second group while in 2nd and 3rd subjects are dependent.

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