2. Identifying the independent-measures design Aa Aa Which of the following expe

Question

2. Identifying the independent-measures design Aa Aa Which of the following experiments uses independent samples? You want to compare the mean first-month weight gain of premature babies to that of full-term babies. So you compare the mean first-month weight gain of a random sample of premature babies to the mean first-month weight gain of a random sample of full-term babies. 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 test whether a sample of chimpanzees raised in captivity and fed a strict vegan diet for their lifetimes live longer than the known average life span for all chimpanzees living in captivity.

Explanation / Answer

The correct answer is A.The pre-mature babies and compared with the full term babies and these represent different populations and hence are independent

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