Question

You are going to test two new varieties of fish food vs. a commonly used fish food. You set up an experiment as follows: 60 fish are randomly assigned to each of three different tanks. One tank is randomly selected to receive one of the new foods and another to receive the other new food. The remaining tank will receive the commonly used food. Fish growth is measured over time. This is an example of:

Answer 1

D. a completely randomized design with a control group.

Step-by-step explanation:

APE X

Answer 2

This is an example of: a completely randomized design with a control group.

Step-by-step explanation:

n a completely randomized design, objects or subjects are assigned to groups completely at random. One standard method for assigning subjects to treatment groups is to label each subject, then use a table of random numbers to select from the labelled subjects. This may also be accomplished using a computer.