A multiple linear regression model has been prepared to pre…

 A multiple linear regression model has been prepared to predict the amount of wheat grown   in a greenhouse, as a function of the amount of water, pesticide, fertilizer, and sunlight used.  The model is based on 9 observations, and the coefficient of determination is 0.9. Which predictor variable would you remove from the model, based on the following output from XL?

The drawing shows three objects. They are connected by strin…

The drawing shows three objects. They are connected by strings that pass over massless and friction-free pulleys. The objects move starting from rest, and the coefficient of kinetic friction between the middle object and the surface of the table is 0.128. (a) Draw separate free-body diagrams for all three objects. (6 points) (b) What is the acceleration of the three objects? (8 points) (c) Find the tension in the string attached to the 25.0 kg object. (6 points) (d) Find the tension in the string attached to the 10.0 kg object. (5 points)  Show all work and write your answer on your paper and upload it to Gradescope at the end of the exam.