A simple random sample of 12 pages was obtained from each of three different books. The Flesch reading ease score was obtained for each of those pages. The Flesch reading ease scoring system results in higher scores for text that is easier to read. Low scores are associated with works that are difficult to read. When the Flesch-Kincaid grade level scores are used instead, the analysis of variance results from software are as shown in the table below. Assume that we want to use a 0.05 significance level in testing the null hypothesis that the three authors have Flesch-Kincaid grade level scores with the same mean. Click the icon to view the table. Data table Source: DF: SS: MS: Reject the null hypothesis. Reject equality of means. Test Stat, F: Treatment: 2 71.187222 35.593611 8.811016 3.284918 0.00086 Error: 33 133.309167 4.039672 Total: 35 204.496389 5.842754 Print Critical F: P-value: Done D X a. What is the null hypothesis? O A. Ho: pages from the three books have the same mean Flesch reading ease scores. OB. Ho: pages from the three books have different mean Flesch reading ease scores. OC. Ho: pages from the three books have the same mean Flesch-Kincaid grade level scores. O D. Ho: pages from the three books have different mean Flesch-Kincaid grade level scores. b. What is the alternative hypothesis? OA. Ha: pages from the three books have mean grade level scores that are not all equal. OB. Ha: pages from the three books have mean grade level scores that are all equal. OC. Ha: pages from the three books have mean grade level scores that are not equal to each other c. Identify the P-value. The P-value is (Round to five decimal places as needed.) d. Based on the preceding results, what do you conclude about equality of the population means? OA. The pages from the three books all has different mean grade level scores. OB. The pages from the three books do not have the same mean grade level scores. OC. The pages from the three books have the same mean grade level scores.

A simple random sample of 12 pages was obtained from each of three different books. The Flesch reading ease score was obtained for each of those pages. The Flesch reading ease scoring system results in higher scores for text that is easier to read. Low scores are associated with works that are difficult to read. When the Flesch-Kincaid grade level scores are used instead, the analysis of variance results from software are as shown in the table below. Assume that we want to use a 0.05 significance level in testing the null hypothesis that the three authors have Flesch-Kincaid grade level scores with the same mean. Click the icon to view the table. Data table Source: DF: SS: MS: Reject the null hypothesis. Reject equality of means. Test Stat, F: Treatment: 2 71.187222 35.593611 8.811016 3.284918 0.00086 Error: 33 133.309167 4.039672 Total: 35 204.496389 5.842754 Print Critical F: P-value: Done D X a. What is the null hypothesis? O A. Ho: pages from the three books have the same mean Flesch reading ease scores. OB. Ho: pages from the three books have different mean Flesch reading ease scores. OC. Ho: pages from the three books have the same mean Flesch-Kincaid grade level scores. O D. Ho: pages from the three books have different mean Flesch-Kincaid grade level scores. b. What is the alternative hypothesis? OA. Ha: pages from the three books have mean grade level scores that are not all equal. OB. Ha: pages from the three books have mean grade level scores that are all equal. OC. Ha: pages from the three books have mean grade level scores that are not equal to each other c. Identify the P-value. The P-value is (Round to five decimal places as needed.) d. Based on the preceding results, what do you conclude about equality of the population means? OA. The pages from the three books all has different mean grade level scores. OB. The pages from the three books do not have the same mean grade level scores. OC. The pages from the three books have the same mean grade level scores.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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