In an international mathematics competition, the mean score obtained was 54.0 and the standard deviation was 9.0. At ABC High School, in one of the participating countries, 40 students entered the competition and their mean score was 57.0. The principal of ABC High School states that his students scored better than the international average. (i) Perform a significance test at 1 % to show that the principal is NOT justified in making this statement. (ii) Is the principal justified in making this statement at the 5 % significance level?

In an international mathematics competition, the mean score obtained was 54.0 and the standard deviation was 9.0. At ABC High School, in one of the participating countries, 40 students entered the competition and their mean score was 57.0. The principal of ABC High School states that his students scored better than the international average. (i) Perform a significance test at 1 % to show that the principal is NOT justified in making this statement. (ii) Is the principal justified in making this statement at the 5 % significance level?

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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