A school conducted a survey of 100 students to estimate the average number of hours per week students spend on homework. The survey found an estimated mean of 7.5 hours with an associated margin of error of 0.8 hours. Which of the following is a plausible statement about the true average number of hours students spend on homework per week for all students in the school?
The true average is exactly 7.5 hours.
The true average is between 6.7 hours and 8.3 hours.
The true average is less than 6.7 hours.
The true average is greater than 8.3 hours.
