00:01
Hi, i'm david and i'm here to help you and change 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.
00:11
Here we will test the evidence for us to conclude that the mean weight for the population is less than 70 kilograms.
00:18
So we have the known hypothesis then the mean equal to the 70 versus the alternative hypothesis that the mean will be less than the 70.
00:28
Here we're given the mean the sample n equal to the 16, the symbol mean x -par equal to the 63, and we're given the population standard deviation, that will be the sigma square, that will be the variance, equal to the 49, then we have the sigma equal to the square rather the 49, equal to the 7.
00:50
And from this information, we can find the test statistics, and it will equal to the x bar 1 ,000, the mean over the sigma the vending square n.
01:02
So we have the 63 minus the mean will be 70.
01:06
Over the sigma will be the 7 divided square in the end will be the 16.
01:11
It will compute this one get equal to the minus 4...