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Knowledge Check Quiz

EXAMS.IE

Inferential Statistics

Hint

We are given information about a sample.

1 / 5

If \(30\) people out of a sample of \(200\) people are vegan, we can infer that \(15\%\) of the population is vegan.

Hint

\(\hat{p}\) represents a proportion.

2 / 5

If \(30\) people out of a sample of \(200\) people are vegan, which of the following is \(\hat{p}\)?

Hint

The margin of error is \(\dfrac{1}{\sqrt{n}\), where \(n\) is the sample size.

3 / 5

If \(30\) people out of a sample of \(200\) people are vegan, which of the following is the margin of error for a \(95\%\) confidence interval?

Hint

The standard error is \(1.96\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\).

4 / 5

If \(30\) people out of a sample of \(200\) people are vegan, which of the following is the standard error for a \(95\%\) confidence interval?

Hint

The standard error includes more variables that we know.

5 / 5

The margin of error is considered to be more accurate than the standard error.

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