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Suppose we know that a confidence interval is (71,95), with a sample mean of x¯=83.

What is the margin of error?



Give just a number for your answer. For example, if you found that the margin of error was 2, you would enter 2.

Provide your answer below:

Respuesta :

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Answer:

12

Step-by-step explanation:

Recall :

Confidence interval = xbar ± margin of error

Xbar = 83

Confidence interval = (71, 95)

We could use either the lower or upper boundary to obtain an integer for the margin of error :

Using the upper boundary :

Upper boundary = Xbar + margin of error

95 = 83 + margin of error

Margin of Error = 95 - 83

Margin of Error = 12