Write the fraction or mixed number number as a decimal -17/40

Which term best describes the association between variables a and b

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?