You have developed a simulation model of a restaurant. In collecting data, you observed that the average time in the system is 9.25 minutes. You are interested in reducing the average time in the system. You make four replications of your simulation model and find that the average times in the system are: 5.2 7.45 4.33 8.12 a) Use these results to calculate a 95% confidence interval for the mean. b) Test a hypothesis to determine if your model is valid and state your conclusion.
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Calculate the sample mean and sample standard deviation of the average times in the system. Sample mean: $\bar{x} = \frac{5.2 + 7.245 + 4.33 + 8.12}{4} = \frac{24.895}{4} = 6.22375$ Sample standard deviation: $s = \sqrt{\frac{(5.2 - 6.22375)^2 + (7.245 - Show more…
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