fact of the day: During your lifetime, you will produce enough saliva to fill two swimming pools ‍♀️

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

With finding limits of multi variable !

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?