Question: The output below is from a test conducted at 2 different time periods on the same group of consumers. The test measured customer satisfaction before

  1. The output below is from a test conducted at 2 different time periods on the same group of consumers. The test measured customer satisfaction before and after a treatment (CustomerSatisfaction_After - CustomerSatisfaction_Before). Interpret the output.

CustomerSatisfaction_After CustomerSatisfaction_Before

Mean 4.033088235 6.040441176

Variance 0.637277512 0.710535598

Observations 272 272

Pearson Correlation -0.045865485

Hypothesized Mean Difference 0

df 271

t Stat -27.68064198

P(T<=t) one-tail .000

t Critical one-tail -1.650495779

P(T<=t) two-tail .000

t Critical two-tail +/-1.968756314

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