Park officials make predictions of times to the next eruption of a particular​ geyser, and collect data for the errors​ (minutes) in those predictions. The display from technology available below results from using the prediction errors to test the claim that the mean prediction error is equal to zero. Comment on the accuracy of the predictions. Use a 0.05 significance level. Identify the null and alternative​ hypotheses, Identify the test​ statistic, Identify the P-value, State the final conclusion that addresses the original claim. Comment on the accuracy of the predictions

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Park officials make predictions of times to the next eruption of a particular​ geyser, and collect data for the errors​ (minutes) in those predictions. The display from technology available below results from using the prediction errors to test the claim that the mean prediction error is equal to zero. Comment on the accuracy of the predictions. Use a 0.05 significance level.

  1. Identify the null and alternative​ hypotheses,
  2. Identify the test​ statistic,
  3. Identify the P-value,
  4. State the final conclusion that addresses the original claim.
  5. Comment on the accuracy of the predictions
Display from Technology
Difference
- 0.469
t (Observed value)
It|(Critical value)
DF
-7.43
1.986
94
p-value (Two-tailed)
| alpha
<0.0001
0.05
Print
Done
Transcribed Image Text:Display from Technology Difference - 0.469 t (Observed value) It|(Critical value) DF -7.43 1.986 94 p-value (Two-tailed) | alpha <0.0001 0.05 Print Done
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