Find the Simple Linear Regression Formula of the data set shown below: (10pts)
1 answer:
Uisng technology, such as a linear regression calculator or excel , the linear equation in slope - intercept format which models the data is 171.47x - 125.83
The relationship between <em>advertising cost</em><em> </em><em>and</em><em> </em><em>e-commerce</em><em> </em>sales is positive which can be inferred from the positive value of the slope which models the data. Also, since, the correlation Coefficient is high, we can expect to have a high e-commerce sales whenever, the advertising cost is high.
Therefore, the linear regression equation is 171.47x - 125.83
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Answer:
6 ft longer (total length of 15ft)
Step-by-step explanation:
the initial dimensions are:
length:
width:
the area area of the garden is given by:
so the original area is:
Since we need the area to be , and we can only change the length, the width will still be 8ft.
We substitute the value of the new area and the width to the equation for the area:
and we clear for the new length:
The length of the garden for the area to be , must be 15ft.
This means that if originally the length was 9 ft, now it has to be 6 ft longer.