Atest to detect an infection gives a positive result 98% of the time if a person is infected. it is 97% accurate for people who are not infected.
% of results will be false negatives, and
% of results will be false positives.

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours