During a Period of High Power Demand, the Voltage Output

question 426

Multiple Choice

During a period of high power demand, the voltage output of the power company is reduced by 5.0%. By what percentage is the power in a resistor decreased?

• A) 10%
• B) 5.0%
• C) 90%
• D) 15%
• E) 2.5%

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Definitions:

Chi-square

A statistical test used to determine if there is a significant association between two categorical variables.

Independent Samples

Two or more groups of data that are collected from separate populations, where the participants in one group do not affect the members of another group.

ANOVA

Analysis of Variance (ANOVA) is a statistical method used to test differences between two or more means by analyzing variances.