APFIVE A study compared the mean daily screen time (in hours) between randomly selected high school students from two different school districts. A 99% confidence interval for the difference in mean daily screen time (District A minus District B) was (-0.8, 0.3). Which statement contains the most complete and accurate interpretation of this confidence interval?
We are 99% confident that the difference in mean daily screen time between the populations of students in District A and District B from which these samples were drawn is between -0.8 and 0.3 hours.
99% of the time, the difference in mean screen time between the two districts will be between -0.8 and 0.3 hours.
We are 99% confident that students in District A spend between 0.8 hours less and 0.3 hours more on screens than students in District B.
The difference in mean screen time between District A and District B is not statistically significant at the 1% level.
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