Apr 10th 2017, 12:33 PM
Join Date: Apr 2017
Results of your chest X-ray are that you have a spherical tumor in your left lung that has a diameter of 3.4 mm, and the uncertainty is ±0.4 mm. This uncertainty is the 1- sigma uncertainty based on the assumption of a normal distribution. What does this mean?
A. The tumor has a diameter between 3.0 mm and 3.8 mm.
B. There is about a 68% chance that the true diameter of the tumor lies between 3.0 mm and 3.8 mm.
C. There is about a 95% chance that the true diameter of the tumor lies between 3.0 mm and 3.8 mm.
D. The tumor has a diameter of either 3.0 mm or 3.8 mm.
E. The tumor has a diameter of 3.4 mm, but the technician may have made a mistake which makes it higher or lower by 0.4 mm.
I'd choose e, does this make sense?