In March 2009, 100 registered voters were asked to rate the

"effectiveness" of President Obama. In March 2010, these same people were again asked to make the same assessment.

Seventy percent o f the second ratings were lower than the first ratings and 30% were higher.

a. Specify the competing hypotheses to determine whether the President's rating has significantly declined.

b. Calculate the value of the test statistic.

c. Calculate the p-value.

d. At the 5% significance level, do the data suggest that the President's rating has significantly declined?