A Group of Statistics Students Decided to Conduct a Survey

question 69

Multiple Choice

A group of statistics students decided to conduct a survey at their university to estimate the average (mean) amount of time students spent studying per week. They sampled 554 students and found a mean of 22.3 hours per week. Assuming a population standard deviation of six hours,what is the 95% level of confidence?

• A)[21.80,22.80]
• B)[16.3,28.3]
• C)[21.64,22.96]
• D)[20.22,22.0]