I need help with Question 12 and for Question 15.

Thank you

to be able to find the answer for question 15 the question 13 need to be solved first.

impacts on salary 12. Hospital XYZ has the following data measuring patient satisfaction levels with the patients' length of stay and their number of prior hospital admissions the past five years. Length of Stay (Days) Number of Previous Admissions Patient Satisfaction Rating 5 3 84 98 2 14 8 3 5 7 2 72 75 90 4 4 6 89 4 1 80 a. Using Excel, compute the multiple regression output. b. Predict the satisfaction of a patient with a length of stay of four days who has been admitted to the hospital twice before. c. List and explain the assumptions used in this regression. d. Calcu Calculate 15. Referring to question 12: a. Calculate MSE and explain its meaning. b. Calculate MAD and explain its meaning. c. Calculate MAPE and explain its meaning. d. Calculate MPE and explain its meaning