SOLUTION: publishing scientific papers online is fast, and the papers can be long. Publishing in a paper journal means that the paper will live foreve in libraries. the british Medical Journ

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Question 428865: publishing scientific papers online is fast, and the papers can be long. Publishing in a paper journal means that the paper will live foreve in libraries. the british Medical Journal combines the two:it prints short and reasable versions, with longer verison available online/ ots this OK with authors? the journal asked about a random sample of 104 of its recent authors several questions. one question was " should the journal using this system?" in the sample 72 said " yes." (a) do the data give good evidence that more than two-thirds (67%) of authors support continuing this system? carry out an appropriate test to help answer this question. (b) interpret the p-values from your test in the context of the problem.

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
the journal asked about a random sample of 104 of its recent authors several questions. one question was " should the journal using this system?" in the sample 72 said " yes."
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(a) do the data give good evidence that more than two-thirds (67%) of authors support continuing this system? carry out an appropriate test to help answer this question.
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Ho: p = 0.67
Ha: p > 0.67 (claim)
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p-hat = 72/104 = 0.69
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z(0.69) = (0.69-0.67)/sqrt[0.67*0.33/104] = 0.4338
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p-value = P(z > 0.4338) = 0.3322
Since the p-value is greater than 5% fail to reject Ho
at the 5% significance level.
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(b) interpret the p-values from your test in the context of the problem.
More than 33% of test results could have provided stronger
evidence for rejecting Ho.
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Cheers,
Stan H.
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