A teacher claims that her students' test scores are getting more consistent and now have a lower variation than 2.31, the variation in previous terms. She conducts a hypothesis test. She calculates her test statistic to be x2 = 15.91 She looks up the critical value for this test and finds it to be = 11.232. What can she conclude? Hint: Set-up Ho and H, first , draw a sketch and read the answer choices carefully! O A. The test statistic falls in the critical (rejection) region for this test. Therefore, there is sufficient evidence to support her claim. O B. The test statistic falls in the critical (rejection) region for this test. Therefore, there is not sufficient evidence to support her claim. O C. The test statistic does not fall in the critical (rejection) region for this test. Therefore, there is sufficient evidence to support her claim. O D. The test statistic does not fall in the critical (rejection) region for this test. Therefore, there is not sufficient evidence to support her claim

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 44E
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A teacher claims that her students' test scores are getting more consistent and now have a lower variation than 2.31. the variation in previous terms. She conducts a hypothesis test.
She calculates her test statistic to be x = 15.91 She looks up the critical value for this test and finds it to be y = 11.232. What can she conclude? Hint: Set-up Ho and H, first, draw a sketch and
read the answer choices carefully!
O A. The test statistic falls in the critical (rejection) region for this test. Therefore, there is sufficient evidence to support her claim.
OB. The test statistic falls in the critical (rejection) region for this test. Therefore, there is not sufficient evidence to support her claim.
O C. The test statistic does not fall in the critical (rejection) region for this test. Therefore, there is sufficient evidence to support her claim.
O D. The test statistic does not fall in the critical (rejection) region for this test, Therefore, there is not sufficient evidence to support her claim.
Transcribed Image Text:A teacher claims that her students' test scores are getting more consistent and now have a lower variation than 2.31. the variation in previous terms. She conducts a hypothesis test. She calculates her test statistic to be x = 15.91 She looks up the critical value for this test and finds it to be y = 11.232. What can she conclude? Hint: Set-up Ho and H, first, draw a sketch and read the answer choices carefully! O A. The test statistic falls in the critical (rejection) region for this test. Therefore, there is sufficient evidence to support her claim. OB. The test statistic falls in the critical (rejection) region for this test. Therefore, there is not sufficient evidence to support her claim. O C. The test statistic does not fall in the critical (rejection) region for this test. Therefore, there is sufficient evidence to support her claim. O D. The test statistic does not fall in the critical (rejection) region for this test, Therefore, there is not sufficient evidence to support her claim.
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