Use the Empirical Rule to Describe Data That Are Bell $130 .$

question 68

Multiple Choice

Use the Empirical Rule to Describe Data That Are Bell Shaped
-The scores from a state standardized test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the Empirical Rule to find the percentage of students with scores between 70 and $130 .$

• A) \(95 \%\)
• B) \(68 \%\)
• C) \(99.7 \%\)
• D) \(100 \%\)

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Definitions:

Confidence Interval

A segment of values, derived from analyzing a sample, that is likely to encapsulate the value of an undisclosed population attribute.

Sample Mean

The average of a subset of a population.

Margin of Error

A measure that indicates the range of values within which the true population parameter is expected to fall.

Sample Size

The number of observations or data points collected for a study or experiment.