The National Academy of Science reported that 39% of research in mathematics is published by US authors. The mathematics

[answerhappygod]

The National Academy of Science reported that 39% 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 39%. He has no
indication of whether the percentage has increased or decreased
since that time. He surveys a simple random sample
of 255 recent articles published by reputable mathematics
research journals and finds that 82 of these articles
have US authors. Does this evidence support the mathematics
chairperson’s claim that the percentage is no longer 39%? Use
a 0.01 level of significance.
Step 1 of 3 :
State the null and alternative hypotheses for the test. Fill in
the blank below.
H0Ha: p=0.39: p⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯0.39