IN sampling and bootstrapping tutorial A

[hungrstrike316]

(1). Under "estimating sample distribution, I don't understand this. They are the same:

"Note that both variables are actually functions, so we write sampler = np.random.standard_normal rather than sampler = np.random.standard_normal"

(2). In "visualizing bootstrapping w histograms", you use this plot_bootstrap function, but it gives an error. Is that something you meant to define or a library you meant to include?

[charlesfrye]

1. D'oh! That should be sampler = np.random.standard_normal(). I've added more text to make that section clearer.
2. Yeah, that section got messed up when I transitioned from functions inside the Jupyter notebook to functions in the utils.