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# HW%2013%20Answer%20Key - C The Cj w o4d be p T d I s kcqht...

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C) The wo4d be pTdI skcqht /;,,c ~ t h evrr Yo1,+ \yj,i.) on +hl+ iine s071,-q 2' Cj ) Rpln, i- &a n o t &age

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Scatterplot of Delivery Time vs Nunber of cases b) Regression Analysis: Delivery Time versus Number of cases ,"- 60- 6 50- P d 40- 30 7 The regression equation is Delivery Time = 24.8 + 0.140 Number of cases a a a a a a a a a a a a a * a a a I Predictor Constant 50 100 150 200 250 300 m r of cases Coef SE Coef T P 24.835 1.054 23.56 0.000 Number of cases 0.140026 0.005627 24.88 0.000 Analysis of Variance Source DF SS MS F P Regression 1 2443.5 2443.5 619.20 0.000 Residual Error 1 8 71.0 3.9 Total 19 2514.5 c) y(hat)%,,, = 24.8 + 0.140(150) = 45.8 minutes

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HW%2013%20Answer%20Key - C The Cj w o4d be p T d I s kcqht...

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