Math Problem Statement
Solution
The problem asks you to interpret the 95% confidence interval for the sample proportion. Here's the step-by-step breakdown of how to interpret it:
Given:
- Sample proportion = 53.2%
- Margin of error = ±7%
The confidence interval can be found by adding and subtracting the margin of error from the sample proportion.
To find the 95% confidence interval:
- Lower bound = 53.2% - 7% = 46.2%
- Upper bound = 53.2% + 7% = 60.2%
Conclusion:
The 95% confidence interval is between 46.2% and 60.2%.
This means the researchers estimate with 95% confidence that the true proportion of college students who use dating apps lies between 46.2% and 60.2%.
Would you like further details on this? Let me know if you have any questions.
Here are 5 related questions to deepen your understanding:
- What does a 95% confidence level mean in this context?
- How does increasing the sample size affect the margin of error in a confidence interval?
- If the confidence level were raised to 99%, how would the interval change?
- What assumptions must be true for this confidence interval to be valid?
- How is the margin of error calculated in such a scenario?
Tip: The confidence interval gives a range where the true population proportion likely lies, but increasing confidence (e.g., to 99%) usually increases the width of the interval.
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Math Problem Analysis
Mathematical Concepts
Statistics
Confidence Intervals
Margin of Error
Formulas
Confidence Interval: p ± Margin of Error
Theorems
Normal Distribution Approximation for Proportions
Suitable Grade Level
Grades 11-12
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