11. Old Faithful Data Set 23 “Old Faithful" in Appendix B includes data from 250 random For Exercise 11 eruptions of the Old Faithful geyser. The National Park Service makes predictions of times to...

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Extracted text: 11. Old Faithful Data Set 23 “Old Faithful" in Appendix B includes data from 250 random For Exercise 11 eruptions of the Old Faithful geyser. The National Park Service makes predictions of times to the next eruption, and the data set includes the errors (minutes) in those predictions. The accompanying Statdisk display results from using the prediction errors (minutes) to test the claim that the mean prediction error is equal to zero. Comment on the accuracy of the predictions. t Test Test Statistic, t: -8.7201 Critical t: ±1.9695 P-Value: 0.0000


Extracted text: Technology. In Exercises 9–12, test the given claim by using the display provided from technology. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value (or range of P-values), or critical value(s), and state the final conclusion that addresses the original claim.