One of the five large bodies
of salt water that cover
much of the earth's
surface

The arizona department of transportation wishes to survey state residents to determine what proportion of the population would like to increase statewide highway speed to 75 from 65 mph. at least how many residents do they need to survey if they want to be at least 99% confident that the sample proportion is within 0.09 of the true proportion?

Why does the united states constitution require that a national census be taken every ten years?

17 points! ! (explain your answer)