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

question 103

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 1.2 hours. Assuming the distribution of study times is normal, what percent of students spend more than 25.1 hours per week on homework?

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

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