(22.53 S-AQ) Publishing scientific papers online is fast, and the papers can be
ID: 3158225 • Letter: #
Question
(22.53 S-AQ) Publishing scientific papers online is fast, and the papers can be long. Publishing in a paper journal means that the paper will live forever in libraries. The British Medical Journal combines the two: it prints short and readable versions, with longer versions available online. A question in the survey asked whether authors would accept a stronger move toward online publishing: "As an author, how acceptable would it be for us to publish only the abstract of papers in the paper journal and continue to put the full long version on our website?" Of the 106 authors in the sample, 68 said "Not at all acceptable."
Solving the problem step by step, find the following values (±0.0001).
The sample proportion of authors answering "Not at all acceptable": pˆ = _____.
The standard error of pˆ :_____ .
For a 97% confidence level for proportion of all authors that would say that if asked,
the margin of error is _____ , and the confidence interval is _____ p_____ .
Do the data provide significant evidence at =0.001 that more than half of all authors feel that abstract-only publishing is not acceptable?
Explanation / Answer
The sample proprtion is p^=68/106=0.64
The standrad error is root over p^(1-p^)/n
=root over 0.64*(1-0.64)/106
=0.05
The 97% confidence interval is:
p^+/-z(0.97)*0.05
=0.64+/-2.17*0.05
=(0.5315,0.7485)
Since, 0.5 is not within the interval thus the effect is significant, so the data provide significant evidence at =0.001 that more than half of all authors feel that abstract-only publishing is not acceptable
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