Let u and u is the average number of razor blades sold the area to collect the money and at the health and beauty Department, respectively. The sample sizes are small and do not know the value of u, but u know the o = o.The amount of freedom.Open the t value in the statistics table t.95% confidence interval opercula of u u is. That is, 95% confidence interval of the difference of the average number of razor blades that sell vacation week that sell payment area and area health departments. 4.06 59.60 from leaves.
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