Step 1: Understanding the Concept:
Strip-plot design is a type of experimental design.
It is used when two factors require large plots.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand the features of strip-plot design.
Step 3: Detailed Explanation:
In strip-plot design:
- Vertical and horizontal strips are perpendicular to each other.
So, A is false.
- Precision of vertical factor is sacrificed to improve precision of horizontal factor.
So, B is false.
- The intersection plot is the smallest in size.
So, C is true.
- There is no relationship between vertical and horizontal plot sizes.
So, D is true.
- Precision of intersection effect is lower than main effects.
So, E is false.
Thus, C and D are correct.
Step 4: Final Answer:
The correct statements are C and D.
Hence, the correct option is (D).