00:01
Okay, so we need to select examples of null hypotheses.
00:05
What is a null hypothesis? the null hypothesis is essentially a hypothesis that is presumed...
00:25
Let's start over.
00:27
Okay, so the question here is asking us to define a null hypothesis.
00:35
Okay, so what is a, or select examples of a null hypothesis.
00:39
What is a null hypothesis? it is essentially a hypothesis that states that there is no statistical difference between observations.
01:17
Essentially, there's no statistical relationship between variables.
01:21
When i say observations, really what we're referring to here is between variables.
01:31
Okay? so we have butterflies with brown coloration are less likely to be consumed.
01:45
That is not a null hypothesis because we are assigning a difference to the coloration.
01:55
Okay, next one.
01:56
Growth of e.
01:57
Coli will not be affected.
01:59
So let's go with a, b, c, d, e, f.
02:07
I don't know how many options there are, but we know it's not a, it's not the first one.
02:11
Next one.
02:12
The growth of e.
02:13
Coli will not be affected by exposure to different wavelengths of light.
02:17
Yep.
02:19
The deer population will not change in a grassland after five years of drought...