A survey of high school students found that the average number of hours spent on homework per week was 12 hours, with an associated margin of error of 2 hours. Which of the following statements is NOT a valid conclusion based on this information?
The true average number of hours spent on homework per week for all high school students is likely between 10 and 14 hours.
If this survey were repeated many times, the sample mean would vary, but the true population mean would remain constant.
The true average number of hours spent on homework per week for all high school students is definitely between 10 and 14 hours.
The interval from 10 to 14 hours provides a plausible range for the population mean.
