__________ believe that numerous and diverse interest groups competing for political influence in an environment of limited resources checks the opportunity for any one group to have an overabundance of power.

As chief diplomat, the president has the power to ______.

a. declare war b. fund foreign operations c. ratify treaties d. receive ambassadors

In regression, given a sample size of 18, what is the level of statistical significance with a sample slope of 4.3 and a value of 0.516 for the standard error of the slope?

a. 0.01 b. 0.02 c. 0.05 d. 0.10