The National Academy of Science reported that 38% of research in mathematics is published by US authors. The mathematics chairperson of a prestigious university wishes to test the claim that this percentage is no longer 38%. He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 279 recent articles published by reputable mathematics research journals and finds that 123 of these articles have US authors. Does this evidence support the mathematics chairperson’s claim that the percentage is no longer 38%? Use a 0.02 level of significance. Step 3 of 3 : Draw a conclusion and interpret the decision. 1. We reject the null hypothesis and conclude that there is sufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed. 2. We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed. 3. We reject the null hypothesis and conclude that there is insufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed. 4. We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed.

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Description: The National Academy of Science reported that 38% of research in mathematics is published by US authors. The mathematics chairperson of a prestigious university wishes to test the claim that this percentage is no longer 38%. He has no indication of w

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 National Academy of Science reported that 38% of research in mathematics is published by US authors. The mathematics chairperson of a prestigious university wishes to test the claim that this percentage is no longer 38%. He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 279 recent articles published by reputable mathematics research journals and finds that 123 of these articles have US authors. Does this evidence support the mathematics chairperson’s claim that the percentage is no longer 38%? Use a 0.02 level of significance.

Step 3 of 3 : Draw a conclusion and interpret the decision.

1. We reject the null hypothesis and conclude that there is sufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed.

2. We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed.

3. We reject the null hypothesis and conclude that there is insufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed.

4. We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0.02 level of significance that the percentage of research in mathematics published by US authors has changed.

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