The Mean Length of Time, Per Week, That Students at a Certain

question 97

Multiple Choice

The mean length of time, per week, that students at a certain school spend on their homework is 24.3 hours, with a standard deviation of 1.4 hours. Assuming the distribution of study times is Normal, what percent of students spend more than 25.238 hours per week on homework? Use the fact that the middle 50% of the data falls within 0.67 standard deviations from the mean.

• A) 16.5%
• B) 5%
• C) 12.5%
• D) 25%

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Workplace

A location or environment where people are employed and perform tasks related to their jobs.

Professional-Level Skills

Advanced competencies and knowledge required for performing tasks and duties in a professional setting.

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The act or state of inclining towards something or someone, either physically or metaphorically, indicating a preference or tendency.

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Having a positive or supportive inclination towards someone or something.