The National Academy of Science reported that 33 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 33 He has no indication of whether the percentage has increased or decreased since that time He surveys a simple random sample of 280 recent articles published by reputable mathematics research journals and finds that 108 of these articles have US authors Does this evidence support the mathematics chairperson s claim that the percentage is no longer 33 Use a 0 01 level of significance Step 3 of 3 Draw a conclusion and interpret the decision Answer Tables Keypad Keyboard Shortcuts We reject the null hypothesis and conclude that there is sufficient evidence at a 0 01 level of significance that the percentage of research in mathematics published by US authors has changed O We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0 01 level of significance that the percentage of research in mathematics published by US authors has changed We reject the null hypothesis and conclude that there is insufficient evidence at a 0 01 level of significance that the percentage of research in mathematics published by US authors has changed We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0 01 level of significance that the percentage of research in mathematics ublished by US authors has changed