What conditions would justify the assumption of a constant contribution margin per customer? Do you think those
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What conditions would justify the assumption of a constant contribution margin per customer? Do you think those conditions are likely to hold here?
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Julie randomly selected 60 customer invoices-30 from day customers, 30 from evening customers. The purchase revenue and cost data are shown below. (For example, the first day customer made a purchase of $32.50, and the alcohol purchased cost $23.89 to stock.) EVENING Purchase Revenue DAY Purchase Revenue Cost Cost 32.50 23.89 40.29 32.00 35.22 25.90 34.66 25.20 39.99 30.40 16.53 35.87 24.01 23.08 36.40 28.60 39.48 28.32 30.95 24.95 30.55 20.17 33.69 22.42 24.77 18.49 33.82 25.89 30.13 21.11 34.92 23.07 31.16 24.91 35.15 25.39 34.67 32.37 25.75 32.89 22.99 25.03 36.30 28.63 40.71 29.61 38.44 29.51 33.07 23.31 32.49 25.36 43.86 29.51 34.91 25.26 45.88 36.39 52.78 37.43 37.08 42.31 29.83 28.81 36.69 29.89 30.20 19.86 43.59 28.51 37.99 26.54 31.38 23.55 26.90 19.19 32.09 21.66 47.19 34.88 26.78 17.93 33.48 25.12 26.39 18.38 44.20 36.09 33.84 22.96 33.52 22.76 32.39 25.24 37.15 26.24 26.79 25.68 25.29 17.72 35.81 21.11 14.41 37.61 27.60 22.23 30.29 24.51 37.79 25.50 31.07 23.27 38.37 29.00 24.35 19.50 27.14 21.31 34.90 28.07 Julie randomly selected 60 customer invoices-30 from day customers, 30 from evening customers. The purchase revenue and cost data are shown below. (For example, the first day customer made a purchase of $32.50, and the alcohol purchased cost $23.89 to stock.) EVENING Purchase Revenue DAY Purchase Revenue Cost Cost 32.50 23.89 40.29 32.00 35.22 25.90 34.66 25.20 39.99 30.40 16.53 35.87 24.01 23.08 36.40 28.60 39.48 28.32 30.95 24.95 30.55 20.17 33.69 22.42 24.77 18.49 33.82 25.89 30.13 21.11 34.92 23.07 31.16 24.91 35.15 25.39 34.67 32.37 25.75 32.89 22.99 25.03 36.30 28.63 40.71 29.61 38.44 29.51 33.07 23.31 32.49 25.36 43.86 29.51 34.91 25.26 45.88 36.39 52.78 37.43 37.08 42.31 29.83 28.81 36.69 29.89 30.20 19.86 43.59 28.51 37.99 26.54 31.38 23.55 26.90 19.19 32.09 21.66 47.19 34.88 26.78 17.93 33.48 25.12 26.39 18.38 44.20 36.09 33.84 22.96 33.52 22.76 32.39 25.24 37.15 26.24 26.79 25.68 25.29 17.72 35.81 21.11 14.41 37.61 27.60 22.23 30.29 24.51 37.79 25.50 31.07 23.27 38.37 29.00 24.35 19.50 27.14 21.31 34.90 28.07
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