Interpretation of the data.    t = -3.4554, df = 6991, p-value = 0.0002763 alternative hypothesis: true mean is less than 50 95 percent confidence interval:       -Inf 49.25556 sample estimates: mean of x   48.57909

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Interpretation of the data. 

 

t = -3.4554, df = 6991, p-value = 0.0002763 alternative hypothesis: true mean is less than 50

95 percent confidence interval:      

-Inf 49.25556 sample estimates: mean of x   48.57909 

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