Chapter 1.3, Problem 3LC

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9th Edition

Frederick J Gravetter + 2 others

ISBN: 9781337098120

Textbook Problem

A recent study reports that infant rats fed a diet containing genetically modified grains reached an adult weight 10% greater than their litter-mates raised on a regular diet. For this study, what is the independent variable?

**a.**The rats given the genetically modified diet**b.**The rats given the regular diet**c.**The type of diet given to the rats**d.**The adult weight of the rats

To determine

The independent variable in a given study.

Explanation

The given information is that the infant rats fed a diet containing genetically modified grains reached. It was found that an adult weight 10% greater than their litter-mates rose on a regular diet.

**Reason for correct answer:**

Since, the type of diet to be fed to rats is optional that is either of two diets regular diet or genetically modified can be used. Also, the type of diet fed is influencing the adult weight.

Thus, the correct option is **c.** The type of diet given to rats.

**Reason for incorrect answer:**

Option **a...**

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