1.A statistics student takes a poll at a local Starbucks to find out if they support the President's decision for declaring the construction of a southern border wall a national emergency. He polls every fifth person that walks into the coffee shop.Why wouldnt this sample be representative of the entire US voting population?

2.There are many websites devoted to polling public opinion on a wide range of topics from politics to consumer preferences. Why are these biased with respect to the general U.S. population? Explain.

3.Identify the sampling technique used to obtain a sample from random, systematic, stratified or convenience sampling.Write the sampling technique in the blank provided.

______________A group of people are classified according to the county where they live and then random samples of people from each county are taken.

______________A lottery ball is selected out an air machine. The valve is open, balls are blown into the tube; they are then transferred through another clear tube into a display area for reading.

______________ The first 10 people to arrive at a City Council meeting are surveyed to find out their opinion on a proposed bond referendum.

______________A quality control supervisor pulls every 20^th widget off an assembly line to test for defects.