A school counselor surveyed a random sample of students about the number of hours they spend on homework each week. The mean was estimated to be 7 hours, with a margin of error of 1 hour. Which of the following is a plausible statement about the mean number of hours spent on homework for all students in the school?
It is between 6 hours and 8 hours.
It is less than 6 hours.
It is greater than 8 hours.
It is exactly 7 hours.
