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Nikitich [7]
3 years ago
5

If the candidate only wants a 0.2% margin of error at a 95% confidence level, what size of sample is needed?

Mathematics
1 answer:
musickatia [10]3 years ago
3 0

Answer:

n = 22

Step-by-step explanation:

Using

n = p(1-p)(Zc/E)²

From table E = 0.2 while p= 0.37

So substituting

We have n= 22.4

Thats a sample size of approximately 22

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A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze, and the second brand is 45% pure anti
kykrilka [37]

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