00:01
Hi, i'm david and i'm here to have you answer your question.
00:04
In the question here, we are going to discuss about the hypothesis testing.
00:08
Here we want to test the claim for the known hypothesis that the mean small equal to the 1 ,180 versus the alternative hypothesis that the mean will be greater than 1 ,180.
00:22
And we are given the symbol size and equal to the 250, the x bar, and the x bar, and the equal to the 1199.
00:36
And we're given the sigma equal to the 212 .15.
00:42
Now, the first question is going to identify the lunar antenitative hypothesis and i see you only answer it correctly.
00:50
And the next step asks me to find the test statistics.
00:52
So from this information we will have the test statistics denoted by the t and you could be the z here.
00:59
It will equal to the x -param minus the mean of a sigma divided by square root of the n.
01:05
We have the 1199 .179 minus the mean will be the 118, divided by the 212 .15 of the square root in the n 250.
01:19
It will compute, we have the 1199 .79 minus 1180, divided by the 210 .12 .15.
01:30
Times square is 250 equal to the 1 .47 and i will write this one to the two decimal places.
01:38
The next one asks that you find the b value.
01:41
Notice that this one will be the right tell test...