A school administrator collected data from a sample of 200 students regarding the amount of time they spend studying per week. The sample mean was 15 hours, with an associated margin of error of 0.8 hours. Which statement best describes the plausible values for the average study time per week for all students in the school?
The average study time for all students is less than 14.2 hours.
The average study time for all students is exactly 15 hours.
Plausible values for the average study time for all students are between 14.2 hours and 15.8 hours.
Plausible values for the average study time for all students are greater than 15.8 hours.
