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, test statistic, P-value, and state the final conclusion that addresses the original claim. A Click the icon to view the display from technology. o Ho: =0 minutes O C. H, p= 0 minutes H1: µ<0 minutes H;: µ#0 minutes Identify the test statistic. (Round to two decimal places as needed.) Enter vour answer in the answer box and then.click Check Answer. make predictions.of times to the next enuntion of a padicular gevser and collect data for the erro jon e i Display from Technology ns. L hal Difference -0.409 -7.67 ****** t (Observed value) |t|(Critical value) DF 1.986 91 p-value (Two-tailed) alpha <0.0001 0.05 Print Done ng Clear All Chack 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. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. A Click the icon to view the display from technology. o Ho: =0 minutes O C. H, p= 0 minutes H1: µ<0 minutes H;: µ#0 minutes Identify the test statistic. (Round to two decimal places as needed.) Enter vour answer in the answer box and then.click Check Answer. make predictions.of times to the next enuntion of a padicular gevser and collect data for the erro jon e i Display from Technology ns. L hal Difference -0.409 -7.67 ****** t (Observed value) |t|(Critical value) DF 1.986 91 p-value (Two-tailed) alpha <0.0001 0.05 Print Done ng Clear All Chack Answer

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are interested in the mean score, μ , among the general population on this subsection. The website reports that μ is 145 , but you have good reason to believe that μ is less than 145 . You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 140 and that the standard deviation of their scores is 22 . Based on this information, complete the parts below. (a) What are the null hypothesis H0 and the alternative hypothesis H1 that should be used for the test? H0: H1: (b) Suppose that you decide not to reject the null hypothesis. What sort of error might you be making? ▼(Choose one) (c) Suppose the true mean score among the general population on the subsection is 137 . Fill in the blanks to describe…
One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are interested in the mean score, μ, among the general population on this subsection. The website reports that μ is 140, but you have good reason to believe that μ differs from 140. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 146 and that the standard deviation of their scores is 22. Based on this information, complete the parts below. A. What are the null hypothesis H0 and the alternative hypothesis H1 that should be used for the test? H0: H1: B. Suppose you decide to reject the null hypothesis. Would you be making a type I or type II error?