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Difference in Proportions

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AP Statistics

Definition

The difference in proportions refers to comparing two proportions or percentages from different groups or populations. It measures whether there is a significant difference between these two proportions.

"Difference in Proportions" also found in:

Subjects (1)

Intro to Biostatistics

Practice Questions (14)

A student constructed a confidence interval for the difference in proportions and found (-0.02, 0.08). What can they conclude at the 95% confidence level?
A survey was conducted to compare the proportion of students who prefer math and those who prefer literature. The 95% confidence interval for the difference in proportions is (-0.03, 0.15). What does this interval suggest?
A researcher constructs a confidence interval for the difference in proportions and finds (0.12, 0.28). What is the correct interpretation of this interval at the 95% confidence level?
A company conducted a study to compare the proportion of customers who preferred their old product to the new one. The 90% confidence interval for the difference in proportions is (-0.06, 0.02). What can be inferred from this interval?
A researcher constructs a confidence interval for the difference in proportions and finds (-0.01, 0.09). What can be concluded at the 95% confidence level?
A teacher conducted a survey to compare the proportion of students who passed a test before and after a tutoring program. The 99% confidence interval for the difference in proportions is (-0.05, 0.15). What does this interval suggest?
A company conducted a study to compare the proportion of customers who preferred their old product to the new one. The 95% confidence interval for the difference in proportions is (-0.08, 0.04). What does this interval suggest?
A student constructs a confidence interval for the difference in proportions and finds (0.10, 0.30). What can be concluded at the 90% confidence level?
A researcher constructs a confidence interval for the difference in proportions and finds (-0.02, 0.10). What can be concluded at the 99% confidence level?
A company conducted a study to compare the proportion of customers who preferred their new product to the old one. The 95% confidence interval for the difference in proportions is (-0.04, 0.06). What does this interval suggest?
A student constructs a confidence interval for the difference in proportions and finds (0.05, 0.15). What can be concluded at the 90% confidence level?
A researcher constructs a confidence interval for the difference in proportions and finds (-0.08, 0.02). What can be concluded at the 95% confidence level?
A company conducted a study to compare the proportion of customers who preferred their new product to the old one. The 99% confidence interval for the difference in proportions is (-0.10, 0.08). What does this interval suggest?
A student constructs a confidence interval for the difference in proportions and finds (0.08, 0.18). What can be concluded at the 90% confidence level?

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Difference in Proportions

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Practice Questions (14)

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Difference in Proportions

from class:

AP Statistics

Definition

Related terms

"Difference in Proportions" also found in:

Subjects (1)

Practice Questions (14)

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.

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