A Group of Statistics Students Decided to Conduct a Survey

question 90

Multiple Choice

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spend studying per week. Based on a simple random sample, they surveyed 144 students. The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours. What is the probability that a sample mean would exceed 20 hours per week?

• A) 1.0
• B) 0.5
• C) 1.96
• D) Cannot be calculated based on the given information.

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