1.7h into seconds, easy points guys, cmon.

Acircle has a circumference of 28.36 units what is the diameter of the circle

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 standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?