Suppose the Speedometer in Your Car Reads 55

question 57

Multiple Choice

Suppose the speedometer in your car reads 55.0 mph. What is your speed in km\hr? (1 km = 0.621 mi.)

• A)34.1
• B)0.029
• C)88.6
• D)0.011

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Definitions:

Confidence Interval

An interval of values, obtained from sample observations, that is likely to include the actual population parameter within a specified confidence level.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values; a higher standard deviation indicates greater variability.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, with a certain level of confidence.

Population Mean

The average value of all the elements in a population, representing the central tendency of that population.