After introducing a new teaching curriculum, a teacher is interested in whether the grade distribution inhis course is significantly different than it was in previous years. The distribution of grades before theintroduction of the new curriculum was as follows:GradePercentage15%AB40%25%D15%F5%A random sample of 150 students taken after the introduction of the new curriculum provided thefollowing results:GradeObserved FrequencyA3065B35D15F5Does the observed data contradict the hypothesis? Formulate and test the appropriate hypotheses at the1% significance level. Use the critical value approach. Clearly state and explain your conclusion withinthe context of the problem.

It is needed to test whether grade distribution in the course is significantly different than it was…

Answered: After introducing a new teaching…

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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The community hospital is studying its distribution of patients. A random sample of 317 patients presently in the hospital gave the following information: Type of Patient Old rate of occurrences of the types of patients Present number of occurrences of these types of patients Maternity ward 20% 65 Cardiac ward 32% 100 Burn ward 10% 29 Children's ward 15% 48 All other wards 23% 75 Using a 5% level of significance, test the claim that the distribution of patients in these wards has not changed. Problem 1 (Test Statistic) A. χ2 = 0.036 B. χ2 = 315.36 C. χ2 = 0.355 D. χ2 = 1101.94 E. χ2 = 0.6322 Problem 2 (p-value, conclusion) A. p = 0.9965; RHo (Observed Values do not match Expectation) B. p = 0.9860; FRHo (Observed Values match Expectation) C. p = 0.9965; FRHo (Observed Values match Expectation) D. p = 0.9860; RHo (Observed Values do not match Expectation) E. p = 0.0035; RHo (Observed Values do not match Expectation)
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