Which of the following best describes a Type I error?

The null is true, but we mistakenly reject it.

The null is false and we reject it.

The null is false, but we fail to reject it.

The null is true but we fail to reject it.

Margin of error equals:

Critical Value ∗ standard Error

An advertiser wishes to see if a new advertisement is effective. The previous advertisement has a recognition score of 3.7. An SRS of 12 potential buyers resulted in a mean score of 3.4 with a st deviation of 1.7 . Which of the following required conditions for conducting a t-test has not been met?

The population is Normally distributed or n is large.

The population is at least 10 times the sample size

The data are taken from a simple random sample.

The decision of each buyer is independent.

What does it mean when a test is statistically significant ?

the test statistic had a P-value lower than the alpha level

it has reached alpha level status

the test statistic had a P-value higher than the alpha level

it is important in practical terms

Which of the following is the central limit theorem?

None of these best describe the Central Limit Theorem.

No matter how the population is distributed, as the sample size increases, the mean of the sample means becomes closer to the mean of the population.

No matter how the population is distributed, as the sample size increases, the standard deviation of the sample means becomes closer to the standard deviation of the population divided by the square root of the sample size.

If the population is normally distributed, then as the sample size increases, the sampling distribution of the sample mean becomes closer to a normal distribution.

What is a sampling distribution?

A distribution of all the values taken by a statistic from all possible samples of a given size.

A distribution of all the statistics that can be found in a given sample

A histogram, or other such visual representation showing the distribution of a sample

A normal distribution of some statistic

Which of the following is a true statement?

None of these are a true statement.

In a well-designed, well-conducted sample survey, sampling error is effectively eliminated.

In a well-designed observational study, responses are influenced through an orderly, carefully planned procedure during the collection of data.

In a well-designed experiment, double blinding is a useful matched pairs design.

AP Stats Review Questions

Authored by Greg Anthony

Mathematics

12th Grade

CCSS covered

Used 61+ times

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26 questions

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Hint: Create some numbers!

Tags

CCSS.HSS.IC.B.4

CCSS.HSS.IC.A.1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hint: Read each answer choice carefully

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CCSS.HSS.IC.B.4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hint: remember that lovely formula chart

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CCSS.HSS.MD.B.5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hint: did you divide first?

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CCSS.HSS.IC.B.4

CCSS.HSS.IC.A.1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hint: think logically...

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CCSS.HSS.IC.B.4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hint: use some of them formulas!

Tags

CCSS.HSS.IC.B.4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hint
Power =1-P(Type II)
Lower Type II = Higher Alpha

Tags

CCSS.HSS.MD.A.2

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