A function is an equation that has only one answer for y for every x. This means that:
Set A and Set C are functions because their y values don’t repeat.
Set B is NOT a function because the 2 in the y values repeats twice.
Hope I helped!
Answer:
.0166
Step-by-step explanation:
Central Limit Theorem for proportions:
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean
and standard deviation 
In this question:

What is σρˆ?
The standard deviation of the sample proportion, which is:

The answer for your question is -3
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