Shortly before the 1932 presidential election, a national magazine conducted a telephone survey of voters. based on the results of the survey, the magazine predicted that herbert hoover (republican) would beat franklin roosevelt (democrat) by a landslide. in fact, exactly the opposite happened. the trouble with the survey was that in the depression era, only the rich could afford phones. plus, wealthy people were more likely to vote republican than democrat. this is a classic example of an error in which phase of inferential statistics?

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?