identify the controls and variables. smithers thinks that a special juice will increase the productivity of workers. he creates two groups of 50 workers each and assigns each group the same task (in this case, theyre supposed to staple a set of papers). group a is given the special juice to drink while they work. group b is not given the special juice. after an hour, smithers counts how many stacks of papers each group has made. group a made 1,587 stacks, group b made 2,113 stacks. identify the: 1. control group 2. independent variable 3. dependent variable 4. what should smithers’ conclusion be? 5. how could this experiment be improved?

Question

Accepted Answer

### 1. Control Group
# Brief Explanation:
The control group is the group not exposed to the independent variable (special juice) to compare with the experimental group. Here, Group B isn't given the special juice, so it's the control.
# Answer:
Group B (the group of 50 workers not given the special juice)

### 2. Independent Variable
# Brief Explanation:
The independent variable is what's manipulated in the experiment. Here, it's the special juice (given to Group A, not to Group B).
# Answer:
The special juice (whether the workers drink the special juice or not)

### 3. Dependent Variable
# Brief Explanation:
The dependent variable is what's measured (depends on the independent variable). Here, it's the number of stacks of papers made, as it's affected by the special juice.
# Answer:
The number of stacks of papers made by the workers

### 4. What should Smithers’ conclusion be?
# Brief Explanation:
Compare the productivity (stacks made) of Group A (with juice) and Group B (without). Group B made more stacks (2,113 vs. 1,587), so the special juice didn't increase productivity; it decreased it (or had a negative effect).
# Answer:
The special juice does not increase the productivity of workers; in fact, the group without the special juice (Group B) had higher productivity (made more stacks of papers) than the group with the special juice (Group A). So, the special juice may even decrease worker productivity.

### 5. How could this experiment be improved?
# Brief Explanation:
To improve, consider factors like sample size (more workers), repeated trials (do the experiment multiple times), controlling other variables (e.g., worker skill, task difficulty), or using a placebo (juice that looks same but isn't special) to account for placebo effect.
# Answer:
- Increase the sample size (use more than 50 workers per group) to make results more reliable.
- Conduct the experiment multiple times (repeated trials) to check consistency.
- Control other variables (e.g., ensure workers have similar skill levels, task difficulty is the same for both groups).
- Use a placebo (a juice that looks like the special juice but isn't) for Group B to account for the placebo effect (workers' belief affecting productivity).

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QUESTION IMAGE

Question

Explanation:

1. Control Group

Answer:

2. Independent Variable