You want to know how much, on average, UNL students study each week. You take a random sample of 80 students and obtain a 95% confidence interval of (8.2,17.6) hours.
Is the following a valid or an invalid interpretation of the interval?
95% of the time, the long-run mean hours spent studying per week for UNL students is between 8.2 and 17.6 .
a-Invalid
b-Valid