A firm has developed a new type of halogen lightbulb and is interested in evaluating its performance to decide whether to market the bulb. It is known that the level of light output of the bulb depends on the cleanliness of its surface area and the length of time the bulb has been in operation. The data are presented in the accompanying table. Use these data and the procedures you learned in this chapter to build a regression model that relates drop in light output to bulb surface cleanliness and length of operation.

Transcribed Image Text:

HALOGEN Bulb Surface Length of C = Clean, D = Dirty operation Drop in Light Output percent original output hours 16 C 400 22 800 27 C 1,200 32 C 1,600 36 2,000 38 2,400 D 4 D 400 6. D 800 D 1,200 9. D 1,600 11 D 2,000 12 D 2,400