Math Problem Statement

Which of the following is NOT true when investigating two population​ proportions? Question content area bottom Part 1 Choose the correct answer below. A. A conclusion based on a confidence interval estimate will be the same as a conclusion based on a hypothesis test. B. Testing for equality of two population proportions cannot be done by determining whether there is an overlap between two individual confidence interval estimates of the two individual population proportions. C. The​ P-value method or the classical method of hypothesis testing can be used to test a claim about two population proportions. D. When testing a claim about two population​ proportions, the​ P-value method and the classical method are equivalent.

Solution

The correct answer is B: Testing for equality of two population proportions cannot be done by determining whether there is an overlap between two individual confidence interval estimates of the two individual population proportions.

Explanation:

  • A is true: Both confidence interval and hypothesis testing will yield consistent conclusions if done correctly.
  • B is not true: Overlapping confidence intervals do not necessarily indicate equal proportions, and lack of overlap doesn't always imply significant differences, so using them to test equality isn't appropriate.
  • C is true: Both the P-value method and the classical (critical value) method are valid for testing claims about two population proportions.
  • D is true: Both methods (P-value and classical) are equivalent when testing the same hypothesis.

Would you like more details on how hypothesis testing and confidence intervals are related, or any other clarification?

Here are 5 related questions:

  1. How is a hypothesis test for two population proportions performed?
  2. What are the steps for calculating a confidence interval for the difference in two proportions?
  3. When is it appropriate to use a two-tailed vs one-tailed test for population proportions?
  4. How does the significance level affect the results of a hypothesis test?
  5. What are common assumptions required for comparing two population proportions?

Tip: Always verify assumptions like normality or sample size adequacy before performing a hypothesis test or constructing confidence intervals.

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Math Problem Analysis

Mathematical Concepts

Statistics
Hypothesis Testing
Confidence Intervals
Population Proportions

Formulas

Z-test formula for two population proportions
Confidence Interval formula for two proportions

Theorems

Central Limit Theorem
Law of Large Numbers

Suitable Grade Level

Undergraduate