Margin Error Confidence Interval

Margin Error Confidence Interval

11th Grade

15 Qs

quiz-placeholder

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Margin Error Confidence Interval

Margin Error Confidence Interval

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Hard

Created by

Anthony Clark

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A 95% confidence interval for a population mean is calculated as (150, 210). What is the margin of error?

30

60

180

360

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

To achieve a narrower confidence interval for a given confidence level, one should:

Increase the sample size.

Decrease the sample size.

Increase the standard deviation.

Decrease the confidence level.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If a 90% confidence interval for a population proportion is calculated as (0.2, 0.4), what is the margin of error?

0.1

0.2

0.3

0.4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

1.64

1.96

2.33

2.58

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If a 90% confidence interval for a population proportion is (0.4, 0.6), what is the sample proportion?

0.1

0.3

0.5

0.7

Not enough information to determine.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

1.64

1.96

2.33

2.58

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does a 95% confidence level mean in the context of constructing a confidence interval?

There is a 95% chance the sample data is correct.

95% of the sample data lies within the interval.

We are 95% confident that the interval (in context) contains the population parameter.

We are 95% confident that the sample parameter estimates the population statistic.

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