confidence interval

Question Help 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 58.6 seconds. Assuming that a = 10.5 seconds, construct and interpret a 95% confidence interval estimate of the population mean of all students Click here to view a t distribution table. Click here to view page 1 of the standard normal distribution table Click here to view page 2 of the standard normal distribution table. What is the 95% confidence interval for the population mean ? (Type integers or decimals rounded to one decimal place as needed.)