Question

Need help on a statistics question

Answer 1

Given:

The equation of the line of best fit is :

`y=4.722392638x+50.99539877`

To find:

The x-intercept and check whether it make sense in this context.

Solution:

We have,

`y=4.722392638x+50.99539877`

Substitute
`y=0` to find the x-intercept of the given best fit line.

`0=4.722392638x+50.99539877`

`-50.99539877=4.722392638x`

`-(50.99539877)/(4.722392638)=x`

`-10.7986359202=x`

So, the x-intercept is at point (-10.7986359202,0). It means the score on final examination is 0 if -10.7986359202 hours spent on studying.

But is does not make sense because the number of hours cannot be negative.