What Is the Average Speed of Walking for an Adult

question 16

Multiple Choice

What is the average speed of walking for an adult?

• A)1 1/2 miles per hour (2 1/2 kilometers per hour)
• B)2 1/2 miles per hour (4 kilometers per hour)
• C)4 miles per hour (6 1/2 kilometers per hour)
• D)5 miles per hour (8 kilometers per hour)

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Definitions:

Confidence Interval

A statistical range, with a certain level of confidence, that is likely to contain the true value of an unknown parameter.

Standard Error

The standard deviation of the sampling distribution of a statistic, often used to measure the precision of a sample mean.

Margin of Error

A statistic expressing the amount of random sampling error in a survey's results, indicating a range within which the true population parameter is likely to lie.

Confidence Interval

A set of values obtained from sample data, which is expected to encompass the value of an unspecified population parameter.