The best design for this experiment is to number the items from 1 to 1,200 and then choose random numbers in the table of random digits (second option).
<h3>How to use a table of random digits?</h3>
These tables are used to randomly assign items or subjects into groups when experimenting. The best way to use these tables are:
- Give each item or participant a number.
- Take a lot at the table and choose a number.
- If this number is the same that the number assigned to an item or participant classify it in the first group.
- Keep selecting.
Based on this, for this experiment the steps are:
- Number the items from 1 to 1,200.
- Identify numvers in the table.
- Assign the first 400 items to the process 1 group.
- Repeat the process for the other two groups.
Learn more about experiments in: brainly.com/question/11256472
#SPJ1
Answer:
In gases and liquids, heat is usually transferred by convection, in which the motion of the gas or liquid itself carries heat from one place to another. ... If you boil water in a kettle, the heat is transferred through convection from the fire to the pot.
Answer:
a ruler or measuring cups are ways of measuring
Explanation:
When sodium amide i.e.
reacts with water i.e. 
results in the formation of sodium hydroxide i.e. 
and ammonia 
.
The chemical reaction is given by:
Now, when ammonia i.e. reacts with water results in the formation of ammonium hydroxide i.e. 
The chemical reaction is given by:
Thus, the products of the above reactions are ammonia and ammonium hydroxide (without sodium ion).
The structures of the products are shown in figure (1): ammonium hydroxide and figure (2) ammonia.
