Temperature Rating (F®) Model Price ($) Ranger 3-Seasons Ranger Spring Ranger Winter Rondane 3-Seasons 319 289 389 12 24 3 13 38 4 5 15 25 45 25 239 149 289 359 259 229 129 199 Rondane Summer Rondane Winter Senja Ice Senja Snow Senja Zero Super Light Tight & Light a. Develop a scatter diagram for these data with temperature rating (F") as the indepen- dent variable. b. What does the scatter diagram developed in part (a) indicate about the relationship between temperature rating (F") and price? c. Use the least squares method to develop the estimated regression equation. d. Predict the price for a sleeping bag with a temperature rating (F") of 20.

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