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Un article trouvé pour ce sujet.
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Confidence level |
2007-11-19 |
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Fara pose la question :
It is common for public opinion polls to have a " confidence level" of 95%, meaning
that there is a 0.95 probability that the poll results are accurate within the claimed margins of error.
If six different organizations conduct independent polls, what is the probability that all
six of them are accurate within the claimed margins of error? Does the results suggest that
with a confidence level of 95%, we can expect that almost all polls will be within the claimed
margin of error?
Harley Weston lui répond. |
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