Course Content
Algebra 1
0/14
Algebra 2
0/16
Trigonometry 1
0/18
Coordinate Geometry of the Line
0/14
Probability 1
0/14
Geometry 1
0/6
Differential Calculus
0/10
Trigonometry 2
0/10
Sequences & Series
0/12
Statistics 1
0/9
Coordinate Geometry of the Circle
0/14
Algebra 3
0/16
Complex Numbers
0/12
Geometry 2
0/4
Integration
0/8
Differential Calculus Applications
0/8
Financial Maths
0/8
Length, Area & Volume
0/6
Probability 2
0/9
Functions
0/15
Statistics 2
0/4
Inferential Statistics
0/6
Digital Lessons

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.