What is social mobility? in which ways can a person move in the social stratification system of the united states and canada?

The social contact theory states that

Which nims command and coordination structures are offsite locations where staff from multiple agencies come together?

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.