The Internet Has Massively Broadened Career Possibilities

Hi everyone! Sal Khan here from Khan Academy. Welcome to our daily homeroom live stream. This is a thing we started, well, it seems like a long time ago now, but it was several weeks ago when the school closures happened. Just a way to continue to support…

In a remote corner of Borneo, hidden in a patch of protective jungle, there’s a school for baby orangutans. Very often, we receive around, and they have spent their whole life in captivity, and that they have never been able to climb a tree. Rescued from …

[Music] Bomb number one was literally a Washington Monument right in the middle of a tobacco field, tail up in the air. The parachute that had deployed was strewn amongst the branches. We found that the weapon was in sufficiently safe condition to transpo…

Today, let’s talk about energy resources. You’ve probably already done something today that used energy resources, even beginning from the moment you woke up. For me, the beginning of my day always starts with making tea. I use energy in every step of thi…

One summer I realized, you know what, I think Khan Academy actually has all of this for me. So I spent the summer looking at it and I had two algebra classes, and I used one for like completely Khan Academy. I want you guys to watch the videos, do all t…

What I want to do in this video is give a primer on thinking about when to use a z statistic versus a t statistic when we are doing significance tests. So, there’s two major scenarios that we will see in an introductory statistics class. One is when we a…