a few issues with LearnUniformDistribution

[gweinberg]

The widget LearnUniformDistribution has the following issues:

Issue 1: Ends of slider should match entered min and max:

It seems like the endpoints of the slider are made to extend one unit below and above the min and max; for instance:

I think that's confusing to students/users. I think the default is that the slider endpoints should match the entered min/max.

If an instructor wanted to show that, for instance, the probability under the Uniform was 0 outside the [min, max] range, then perhaps you could change the slider functionality to allow the slider endpoints to also be entered (in which case, I guess they would have to become de-coupled from the min/max).

Issue 2: At enlarged browser resolution, the slider overlaps the box:

Issue 3: The plot looks wrong because the scales aren't the same on both axes: