Randomly selected students participated in an experiment to test their ability to determine when one minute (or sixty seconds) has passed. Forty students yielded a sample mean of 62.8 seconds. Assuming that σ = 11.9 seconds, construct and interpret 99% confidence interval estimate of the population mean of all students.

What is the 95% confidence interval for the population mean ??

Answer rating: 100% (QA)

Solution Number of students n 40 Sample mean x 628 seconds Population s... View the full answer