How was early sumerian society organized? how did that organization affect society?

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?

What was the midwest states often called because they were located in the center of the nation

Which shows the best path to find the number of centimeters in 1 yard?