00:01
On this problem, we'd like to identify the following random variables is either discrete or continuous.
00:11
Now, remember that a discrete random variable is one that can be counted, so it's countable.
00:19
Continuous random variable is one that is not countable.
00:24
In other words, it's one that can be measured.
00:29
So let's go through here and discuss whether the following represent discrete or continuous random variables.
00:35
On a, we have the lifespan of an electric bulb.
00:38
That's not something that you would count.
00:40
That's something that you would measure.
00:43
And so that would be continuous.
00:48
On b, we have the heart rate of an adult male.
00:52
That is also something that you would measure, except that they're talking about the number of beats per minute.
01:00
So that means it would be a whole number of beats per minute.
01:02
So your nurse would count that...