00:01
Hi, i'm david and i'm very much in your question.
00:03
Now let me bring up your question here.
00:06
In the question here, we are going to discuss about the hybrid testing.
00:10
Here we'll test whether there is evidence that the average student spent less than the recommended amount of time, that, the 36 hours.
00:19
So here we have the known hypothesis, when the mean equal to the 36, versus the alternative hypothesis.
00:27
Means will be less than 36.
00:30
In the question here, we're given the symbol and equal to the 12.
00:34
The properties standard division sigma equal to the 8.
00:38
And we need to find the x bar from the list of the data here.
00:43
So i will pass the data into the calculator.
00:46
The first one be the 31, and then 40, 26, 30, 306, 38, 29, 40, 40, 38, 35, and the 38.
01:07
So we have the x bar, it will equal to the 34 point 25.
01:14
Now with this information, we can find the test statistics denoted by the z...