00:01
So the first thing that we need to do whenever answering these types of questions is to define the null hypothesis and its alternative.
00:08
So based on the information that we've been given, for the nile hypothesis, we are saying the population mean operation costs, they are the same.
00:16
And its alternative is going to be saying these are actually different.
00:22
So based on what we've been given, what would want to do as a strategy is to look for a test statistic.
00:29
And for that test statistic would want to determine its corresponding critical value.
00:34
The difference between the test statistic and its critical value is going to help us determine if we should accept or reject this initial assumption.
00:46
Based on the data that we've been given, let's say we are using the cross -car wireless test.
00:51
Our test statistic is going to be the w value.
00:54
And based on the information, the ranks that we've been given, we are looking at a value that is going to be equal to 0 .3650...