AP Stats: Chapter 7 Review

AP Stats: Chapter 7 Review

Assessment

Flashcard

Mathematics

10th Grade - University

Practice Problem

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the mean of the sampling distribution if the population mean is 200?

Back

200

2.

FLASHCARD QUESTION

Front

What is the standard deviation of the sampling distribution if the population standard deviation is 20 and the sample size is 25?

Back

4 (calculated as 20/sqrt(25))

3.

FLASHCARD QUESTION

Front

What is the probability of selecting one data value less than 190 if the population mean is 200 and standard deviation is 20?

Back

31% (using the Z-score formula)

4.

FLASHCARD QUESTION

Front

How does increasing the sample size affect the variability of estimates in an opinion poll?

Back

It reduces the variability of the estimates.

5.

FLASHCARD QUESTION

Front

In the context of statistics, what is the difference between a parameter and a statistic?

Back

A parameter is a value that describes a population, while a statistic describes a sample.

6.

FLASHCARD QUESTION

Front

If 78% of students at a college receive financial aid, what is this percentage considered?

Back

A parameter.

7.

FLASHCARD QUESTION

Front

If a random sample of 100 students shows that 72% receive financial aid, what is this percentage considered?

Back

A statistic.

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