Suppose, to Select a Sample from a Population of 3000

question 26

Multiple Choice

Suppose, to select a sample from a population of 3000 persons, the following procedure is followed. The names of the people are written on identical, square pieces of thin cardboard measuring one inch on a side, and these pieces of cardboard are then tumbled in a clothes dryer (with the heat shut off) . After 30 minutes, a blindfolded person reaches in and withdraws a selected number of names. What can be said about this sample?

• A) The sample is probably biased because clothes dryers are not supposed to be used in collecting samples.
• B) The sample is probably biased because people with shorter names would be selected first.
• C) The sample is probably biased because the names on the top of the heap would be selected first.
• D) The sample is probably biased because the names toward the front of the dryer would probably be selected first.
• E) The sample is almost certainly random.

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