Question

= ciation op Parkcials 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 005 significance level. Identify the null and alternative hypotheses test statistic, P value, and state the nal conclusion that addresses the original claim Click the icon to view the display from technology Display from Technology - x mutes minutes minutes Difference 1 (Observed value (Crnical value D -0.975 - 777 1.984 50 p-value wolled) <0.0001 0.05 5 rary

Answer 1

Answer: 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.

Solution:

From the given results.

The hypothesis test:

Ho: μ = 0

Ha: μ ≠ 0

Test statistic t = -7.77

P-value = 0.0001.

Since, P-value (0.00) < α (0.05) significance level.

We reject the null hypothesis Ho.

Conclusion:

Reject Ho. There is sufficient evidence to support the claim that the mean prediction error is not equal to zero.