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# Confidence Interval

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Using sample results and level of confidence of 0.01, test to determine whether the figure published by Runzheimer International is too high.
Was it a one- or two-tailed test?

##### Solution Summary

The solution addresses using sample results and level of confidence of 0.01, test to determine whether the figure published by Runzheimer International is too high.
Was it a one- or two-tailed test?

##### Solution Preview

This problem isn't very complicated. We can construct a confidence interval for the sample mean at 0.01 level of confidence. If the population mean \$4,292 falls within this confidence interval, the figure published by Runzheimer ...

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