Question: Based on a study by Dr. P. Sorita Soni at Indiana University, we know that the eye colors in the United States are distributed as

Based on a study by Dr. P. Sorita Soni at Indiana University, we know that the eye colors in the United States are distributed as follows: 44% brown, 33% blue, 13% green, 6% gray, and 4% hazel.

  1. A statistics instructor collects eye color data from her students. What is the name of this sampling method? ...............................................................................................................................
  2. Identify one factor that might make this particular sample biased and not representative of the general population of people in the United States. .....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
  3. If one person is randomly selected, what is the probability that this person will have blue or grey eyes? Express the probability as a decimal value. ..................................................................................................................................................................................................................................................................
  4. If three people are randomly selected, what is the probability that at least one of them has brown eyes? Express the probability as a decimal value.

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