Answer: Experiment - randomized block design
Explanation:
A randomized block design (RBD) is an experimental study where the scientist classifies subjects into different groups, denominated blocks. The subjects within each block are assigned to the different treatments, varieties of wheat in this example.
A randomized block design is effective when the subjects within blocks are comparable in how they influence the response variable but differ from other blocks.
Speed of response is not correlated with iq scores
I believe it’s Page 24 or that’s what it is in my book
A Blockade is a wall of ships that can form a wall to prevent passage to another country (Normally used in war to 'starve' the enemy!).