00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
Now let me bring up your question here.
00:07
In this question we will discuss about the hypothesis testing and in this study here we want to test the average age of robbery victim of the value 63 .5 versus the alternating hypothesis that the average age higher than the originally believes.
00:32
So it means that the first step a here, we want to build up the noon hypothesis and the alternating hypothesis.
00:42
And for the noon one, we will have the mean equal to the 63 .5 versus the alternating one we will want to have higher than so m will be greater than 63 .5.
00:56
So that would be the part a.
00:57
Now in the part b find the critical value and compare with the test value.
01:04
Now there's two things we need to compute.
01:07
First will be the critical values and add the un -file equal to 0 .05 and we have the summae equal to the 20.
01:15
So let me summarize here.
01:17
We have the n equal to the 20 and we will have the mean x -par equal to the 63 .7.
01:26
And then we will have the standard division of the symbol equal to 1 .9 and we have the alpha equal to 0 .05...