Question

Alex is interested in how different types of fertilizers affect the growth of tomato plants. He decides to apply different fertilizers to separate groups of plants and measure their growth over several weeks. Would Alex’s statistical question best be answered by an experimental study?(2 points) Responses Yes, because Alex is manipulating the type of fertilizer to observe its effect on plant growth. Yes, because Alex is manipulating the type of fertilizer to observe its effect on plant growth. No, because Alex is simply observing how the plants grow under different conditions. No, because Alex is simply observing how the plants grow under different conditions. Yes, because Alex is only observing the plants without making any changes. Yes, because Alex is only observing the plants without making any changes. No, because Alex is not using any variables in his study. No, because Alex is not using any variables in his study.

Answer 1

Yes, because Alex is manipulating the type of fertilizer to observe its effect on plant growth.