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Recent reseatch inte the cost of valious miedicol procedures hos shown the impact of certain cothplicallons encountered in stargery on. the total cost of patierifs stay in the hospitat. The researchers used regiession analysis and found itse following results Total cost for patient = Censtant, plus a w Length of stay (cieasured in days), plus b. Presence of one or more complications fe 1 if true, 0 if falsek plus c * Use of a laparoscope ( 1 if true, 0 if faks) Where a b care coetficlents of the regression modek. The ioparoscope is an instrument somewhat like a miniatura telescope with a fiberioptic system that brings light into the abdomen. It is about as blg around as a fountain pen and fwice as long. The research, bosed of 65 patienits, showed the following regression results: Risquiced: 55% Corstant term: $3,158 Coellicients and tvalues for independent voriables: Required: reciules a rapiroscope? Which. If any, dunmy vamibles are used inthls regressioni (You may select more then one ansver Single click the box with the uestion mark to produce a check mork for a correct answer and double click the box with the question mark to empty the box for wrong answer. Any boxes left with a question mark will be outomotically graded as incorrect.)

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