If the Sample Mean Is 56

question 129

Multiple Choice

If the sample mean is 56.2, with an upper limit to the confidence interval of 62.74, what is the lower limit?

• A) 6.54
• B) 49.66
• C) 52.46
• D) 56.20

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Definitions:

Confidence Interval

A range of values derived from sample data that is likely to contain the true value of an unknown population parameter, at a given probability level.

Confidence Level

The probability, expressed as a percentage, that a confidence interval contains the true population parameter.

SAT Math

A section of the SAT exam that tests mathematical knowledge and skills, including algebra, geometry, data analysis, and problem-solving.

Normal Distribution

The normal distribution is a bell-shaped curve, describing the spread of a set of data where most values cluster around a mean value.