The National Academy of Science reported that 41% 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 41%. He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 186 recent articles published by reputable mathematics research journals and finds that 92 of these articles have US authors. Does this evidence support the mathematics chairperson's claim that the percentage is no longer 41%? Use a 0.05 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.
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Null hypothesis (H0): The percentage of articles with US authors is still 41%. Alternative hypothesis (Ha): The percentage of articles with US authors has changed. Show more…
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The National Academy of Science reported that 45% 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 45% . He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 107 recent articles published by reputable mathematics research journals and finds that 38 of these articles have US authors. Does this evidence support the mathematics chairperson’s claim that the percentage is no longer 45% ? Use a 0.02 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.
Qudsiya A.
The National Academy of Science reported that 41% 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 41% . He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 201 recent articles published by reputable mathematics research journals and finds that 67 of these articles have US authors. Does this evidence support the mathematics chairperson’s claim that the percentage is no longer 41% ? Use a 0.05 level of significance. Step 2 of 3: Compute the value of the test statistic.
Benjamin D.
The National Academy of Science reported that 37% 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 37% . He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 297 recent articles published by reputable mathematics research journals and finds that 94 of these articles have US authors. Does this evidence support the mathematics chairperson’s claim that the percentage is no longer 37% ? Use a 0.02 level of significance. Step 2 of 3 : Compute the value of the test statistic. Round your answer to two decimal places.
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