There are 100 different researchers each studying the sleeping habits of college freshmen. Each researcher takes a random sample of size 50 from the same population of freshmen. Each researcher wants to estimate the mean hours of sleep that freshmen get at night, and each one constructs a 95% confidence interval for the mean. Approximately how many of these 100 confidence intervals will NOT capture the true mean? (Choose the best answer.)

• A. None
• B. 1 or 2
• C. 3 to 7
• D. 8 to 10
• E. More than 10