please use Matlab, please show all codes used, if you can add ss of matblab code

Question 5(25%) : It is difficult to determine a person's body fat percentage accurately without immersing him or her in water. The water immersion test is highly accurate, but is time consuming to perform. Your goal is to build a model that makes good estimates of body fat percentage without the need tor immersion techniques. To build your model, you acquire data from a study where researchers performed water immersion tests on 20 participants to determine their body fat percentage; however, the researchers also measured subjects' waists and weights. You will use these easily accessible measures (waist and weight) to create a model that can predict body fat percentage. a. (10\%) Create a model to predict percent Body Fat from a linear combination of Weight, Waist, and an Oitset term using the available data. b. (5\%) How good is your model? Briefly justify your response. c. (5%) What is the model residual for the fourth subject? d. (5%) What is the model prediction for body fat % of a person with a 40 in waist and weighing 170lb