What is the volume (expressed in µl) of an animal cell (a lymphocyte) that has the diameter of 8 µm? the volume of a sphere (or spherical cell) is volume = (1/6)πd3; where π = 3.14; d = diameter.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.