Last time | Next time |
You're sort of missing the main point if you don't mention the parameter.
$H_o:\ p=.286$ and $H_a:\ p<.286$.
Critical: $\alpha$ is chosen before the sample is taken. Otherwise, you would be tempted to set the level of significance to get the answer you want....
Confidence that human activities have been raising the global temperature at Earth's surface is at a "five-sigma" level, a statistical gauge meaning there is only a one-in-a-million chance that the signal would appear if there was no warming, Reuters reports.
Let's remind ourselves about the distribution of $\hat{p}$:
Now in this case we don't have $p$. We want to find $p$. So how do we proceed? That's the subject of this packet.