Check my work Recent research into the cost of various medical procedures has shown the impact of certain complications encountered in surgery on the total cost of a patient's stay in the hospital. The researchers used regression analysis and found the following results: Total cost for patient = Constant, plus ax Length of stay (measured in days), plus bx Presence of one or more complications (= 1 if true, o if false), plus c* Use of a laparoscope (= 1 if true, 0 if false) where a, b, c are coefficients of the regression model. The laparoscope is an instrument somewhat like a miniature telescope with a fiber optic system that brings light into the abdomen. It is about as big around as a fountain pen and twice as long. The research, based on 72 patients, showed the following regression results: R-squared: 49% Constant term: $3,941 Coefficients and t-values for independent variables: Coefficient t-value Length of Stay $ 632 9.08 Complications $ 1,815 5.50 Laparoscope 940 2.61 Required: 1. What is the estimated cost for a patient whose surgery has complications and who icients of the regression model. The laparoscope is an instrument somewhat like a miniature telescope with a fiber-optic system that brings light into the abdomen. It is about as big around as a fountain pen and twice as long. The research, based on 72 patients, showed the following regression results: R-squared: 49% Constant term: $3,941 Coefficients and t-values for independent variables: Coefficient t-value Length of Stay Complications Laparoscope $ 632 $ 1,815 $ 948 9.08 5.50 2.61 Required: 1. What is the estimated cost for a patient whose surgery has complications and who stays in the hospital 4 days, and whose surgery requires a laparoscope? Estimated cost This is a numeric cell, so please enter numbers only. 2. Which, if any, dummy variables are used in this regression? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.) ? Length of stay (measured in days) Use of a laparoscope Complications were present