Content Error in Power of Test Video@ 2:11min

In the screen shot, it shows mu = 70 and X ~N(70, (3^2)/10)

N value: 3^2/10 is incorrect. It should be (3/Sqr root(10))

It should show: X ~N(70, 3/sqr root(10))

Hi!

Thanks for noticing this.

We have replaced the notation for the Normal Distribution throghout the course. We decided to use a more widely used notation in literature, that is N(\mu, \sigma^2) instead of N(\mu, \sigma). Note that both notations are correct and encodes the same information without any loss. However, we decided to stick with the former to avoid any confusion with learners that may read from other sources.

Thanks,
Lucas