for each given situation, determine if the me...

for each given situation, determine if the method of randomization is either appropriate or not appropriate.\nnot appropriate appropriate\nsituation randomization\n1. a car company is performing a survey to find out about people’s driving habits in a certain city. they randomize the survey by talking to every 50th person who leaves a movie theater within this certain city.\n2. a university wants to test the health effects of a certain sweetener. prior to testing the sweetener, they randomize the experiment by flipping a fair coin that assigns each person to the experimental or control group.\n3. a laboratory wants to know how having chicken pox as a child has affected people’s immune systems as adults. they randomize the study by assigning subjects to groups based on a random drawing.

Answer

# Brief Explanations: 1. People leaving a movie - theater may not be a representative sample of all drivers in the city. There could be biases related to movie - goers' demographics, time of day, etc. So, this randomization is not appropriate. 2. Flipping a fair coin to assign people to experimental or control groups is a standard and appropriate way of randomization in an experiment to test the health effects of a sweetener. It helps in creating comparable groups. 3. Randomly assigning subjects to groups based on a random drawing is an appropriate way to randomize a study about the long - term effects of chicken pox on the immune system. It helps in reducing selection bias. # Answer: 1. Not Appropriate 2. Appropriate 3. Appropriate