0:00
All right, so we have a set of questions.
00:01
We're going to go ahead and answer them.
00:03
The first one is asking us about a model, y equals mx plus b.
00:11
That is used to predict the estimated sales in millions of dollars given the number of hurricanes.
00:24
So hurricanes goes here.
00:25
X is the number of hurricanes.
00:29
And then y is the estimated sales.
00:39
In millions of dollars in terms of the income of a company.
00:44
And we're told that m is 0 .76, so our equation is y is 0 .76x plus 5.
00:53
And we want to assume that the weather service is predicting six hurricanes.
00:57
We want to figure out the sales of this company.
01:00
So what we do is we substitute 6 in for x.
01:02
So we put 6 in here and we get our value.
01:04
And what we end up with is 9 .56.
01:11
But again, this is in millions of dollars.
01:14
All right, the second question is very similar.
01:19
We have a farmer whose yield of corn is expressed as a linear regression model.
01:25
And again, it's y is mx plus b.
01:27
But we're told that m is 1 .38, and then the b is 42...