In a survey of sleeping habits, 8400 adults were selected randomly and contacted

Question

In a survey of sleeping habits, 8400 adults were selected randomly and contacted by telephone. Based on a medical association's recommended amount of sleep for adults, respondents were asked, “Do you typically sleep more than six hours during the night?” Of those surveyed, only 46% reported that they did. Which statement is TRUE with respect to this scenario? 8400 is the size of the population being studied. 46% is a statistic and represents an estimate of the unknown value of a parameter of interest. None of the above 46% is a parameter and represents an estimate of the unknown value of a statistic of interest. In a survey of sleeping habits, 8400 adults were selected randomly and contacted by telephone. Based on a medical association's recommended amount of sleep for adults, respondents were asked, “Do you typically sleep more than six hours during the night?” Of those surveyed, only 46% reported that they did. Which statement is TRUE with respect to this scenario? 8400 is the size of the population being studied. 46% is a statistic and represents an estimate of the unknown value of a parameter of interest. None of the above 46% is a parameter and represents an estimate of the unknown value of a statistic of interest.

Explanation / Answer

In a survey of sleeping habits, 8400 adults were selected randomly and contacted by telephone. Based on a medical association's recommended amount of sleep for adults, respondents were asked, “Do you typically sleep more than six hours during the night?” Of those surveyed, only 46% reported that they did. Which statement is TRUE with respect to this scenario? 46% is a statistic and represents an estimate of the unknown value of a parameter of interest.

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