Option D
The regression line predicts that at x = 4, y equals 2143
Solution:
Given that when x equals 4, log(y) will equal 3.331
To find: Find y when x equals 4
Since we have given that,
When x = 4,
[tex]\text{ log } y = 3.331[/tex]
We need to find the value of 'y' when x = 4
[tex]log_{10}y = 3.331[/tex]
Since it is logarithmic function with base 10, Raise to power of 10 on both sides,
[tex]10^{log_{10}y} = 10^{3.331}\\\\\text{10 power log base 10 cancels, we get }\\\\y = 10^{3.331}\\\\y = 2142.89[/tex]
On rounding to nearest whole number, we get 2143
Thus Option D is correct
