Math Problem Statement

Standard error = 1.6, confidence level 95% What is the margin of error?

Solution

To calculate the margin of error for a 95% confidence level, we use the formula:

Margin of Error=ZStandard Error\text{Margin of Error} = Z \cdot \text{Standard Error}

Here:

  • Standard Error (SESE) = 1.6
  • The ZZ-value for a 95% confidence level = 1.96 (from the standard normal distribution table)

Now, compute:

Margin of Error=1.961.6=3.136\text{Margin of Error} = 1.96 \cdot 1.6 = 3.136

Final Answer:

The margin of error is approximately 3.14.

Would you like details on this calculation or further assistance?


Here are 5 related questions you may find useful:

  1. How do you interpret a confidence interval using the margin of error?
  2. What is the ZZ-value for a 99% confidence level?
  3. How would the margin of error change if the standard error were larger or smaller?
  4. What factors influence the standard error in a dataset?
  5. How is the margin of error affected by different confidence levels?

Tip: Always round your results to the appropriate number of decimal places, especially when reporting for scientific or statistical use.

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Math Problem Analysis

Mathematical Concepts

Statistics
Confidence Intervals
Margin of Error

Formulas

Margin of Error = Z * Standard Error

Theorems

Standard Normal Distribution (Z-scores)

Suitable Grade Level

Grades 11-12, Undergraduate Statistics