​Martika is an accomplished businesswoman, and has decided t…

​Martika is an accomplished businesswoman, and has decided to retire at the age of 53 years. She has begun taking cello lessons, something in which she has always been interested. While her friends keep telling her that it is too late for her to learn such a complex skill, she has started getting rather good on her instrument. Martika’s midlife development of a new skill demonstrates

​Sally steps on her bathroom scale, and it tells her that sh…

​Sally steps on her bathroom scale, and it tells her that she weighs 145 pounds. When she steps on it again after her shower, she gets the same result. In fact, it has told her that her weight is stable at 145 pounds for several days now. This is very distressing to Sally, because she knows she actually only weighs around 127 pounds. Based on her observations, what can more accurately be said about the measurements provided by Sally’s scale?