Mandate Perceptions. L. Grossback et al. examined mandate perceptions and their causes in the paper “Comparing Competing Theories on the Causes of Mandate Perceptions” (American Journal of Political Science, Vol. 49, Issue 2, pp. 406–419). Following are data on the percentage of members in each chamber of Congress who reacted to mandates in various years.

Senate House 21 38 40 39 27 30.3 41.1 15.6 10.1 27 17 25 25 23.9 15.2 11.7 At the 10% significance level, do the data provide sufficient evidence to conclude that, on average, the percentage of senators who react to mandate perceptions each year exceeds that of representatives?