F(u) = (2u + 3)^3/2 + (U^2 - 5)^-3/2

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

The total number of dental clinics total for the last 12 months was recorded

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?