in exercises 1 - 4, determine whether the data are collected from a population or a sample. explain your…

in exercises 1 - 4, determine whether the data are collected from a population or a sample. explain your reasoning. 1. the number of high school students in the united states 2. the color of every third car in a parking lot 3. a survey of 100 spectators at a sporting event with 1800 spectators 4. the age of each dentist in the united states

in exercises 1 - 4, determine whether the data are collected from a population or a sample. explain your reasoning. 1. the number of high school students in the united states 2. the color of every third car in a parking lot 3. a survey of 100 spectators at a sporting event with 1800 spectators 4. the age of each dentist in the united states

Answer

Brief Explanations:

  1. The number of all high - school students in the US represents the entire population of high - school students in the country.
  2. Selecting every third car in a parking lot is a sample as it is only a part of all cars in the parking lot.
  3. A survey of 100 spectators out of 1800 is a sample since it is not all spectators.
  4. The age of each dentist in the US is data from the whole population of dentists in the US.

Answer:

  1. Population. Reason: It refers to all high - school students in the US.
  2. Sample. Reason: Only a part of cars in the parking lot is selected.
  3. Sample. Reason: Only 100 out of 1800 spectators are surveyed.
  4. Population. Reason: It includes all dentists in the US.