Question: Positive signs: 856; negative signs: 151; ties: 57 (from a Pew Research Center poll of adults who were asked if they know what Twitter is)

Positive signs: 856; negative signs: 151; ties: 57 (from a Pew Research Center poll of adults who were asked if they know what Twitter is)

Assume that matched pairs of data result in the given number of signs when the value of the second variable is subtracted from the corresponding value of the first variable. Use the sign test with a 0.05 significance level to test the null hypothesis of no difference.

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