The table below gives the number of fruit produced per tomato plant in relation to soil nitrogen, phosphorous and nickel (which is toxic to plants, but occurs naturally in some soils).
![2369_number of fruit produced per tomato plant.png](https://secure.tutorsglobe.com/CMSImages/2369_number of fruit produced per tomato plant.png)
Run a multiple linear regression on the data.
(a) What is the regression equation?
(b) What is the value of r 2 ?
(c) Which independent variables are significant? Is the intercept significantly different to 0?