Why are protective tariffs considered positive?
a), they lower the price of exports.
b), they cause an increase in imports.
c), they raise the price of imports.
d), they raise the sale of goods produced by the country.

Arecent poll of 500 residents in a large town found that only 36% were in favor of a proposed referendum to build a new high school. find the margin of error for this poll if we want 95% confidence in our estimate of the percentage of residents in favor of this proposed referendum.