Ways in which entrepreneurship can combat unemployment and improve the economy of south africa?

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.

Which label identifies the step labeled w?

What does one prolonged blast and one short blast mean?