Unformatted text preview: than for the national pizza chain? Assume that the population variances of the delivery times for each pizza place are approximately equal. Results for: Pizza1.MTW Two-Sample T-Test and CI: local, chain Two-sample T for local vs chain N Mean StDev SE Mean local 10 16.70 3.10 0.98 chain 10 18.88 2.87 0.91 Difference = mu (local) - mu (chain) Estimate for difference: -2.18000 95% upper bound for difference: 0.13336 T-Test of difference = 0 (vs <): T-Value = -1.63 P-Value = 0.060 DF = 18 Both use Pooled StDev = 2.9831...
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- Spring '12
- Statistics, local pizza restaurant, national pizza chain