At 10 Cents Per Kilowatt- Hour, How Much Does It

question 66

Multiple Choice

At 10 cents per kilowatt- hour, how much does it cost to run a 100 watt lightbulb for 200 hours every month?

• A) 20 cents per month
• B) $2 per month
• C) $20 per month
• D) impossible to determine because we don't know the voltage
• E) impossible to determine because we don't know the power

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Definitions:

Population Standard Deviation

A measure of the variation or dispersion of all values in an entire population.

Standard Error

A statistical measure that represents the accuracy with which a sample distribution represents a population by quantifying the variability of the mean.

Standard Deviation

A statistic that measures the dispersion or variability of a dataset relative to its mean, indicating how spread out the data points are.

Mean Purchase

The average amount of purchases made over a certain period of time or across individuals.