Test the hypothesis of no differences for average payback

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Test the hypothesis of no differences for average payback period (years) necessary to justify solar heating systems for residences.

Savings and Loans Other Financiers

X1 = 8.7 X2 = 7.7

S2/1 = .5 S2/2 = .6

n1 = 100 n2 = 64

Reference no: EM13240692

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