A survey was conducted on the average number of hours high school students spend on homework per week. From a random sample of 100 students in a large district, the mean number of hours was found to be 8.5 hours, with an associated margin of error of 1.2 hours. Which of the following is a plausible statement about the mean number of hours spent on homework per week for all high school students in the district?
It is plausible that the mean number of hours is between 7.3 and 9.7.
It is plausible that the mean number of hours is exactly 8.5.
It is plausible that the mean number of hours is less than 7.3.
It is plausible that the mean number of hours is greater than 9.7.
