HSA 2007 Algebra/Data Analysis Item 19print

HSA 2007 Algebra/Data Analysis Item 19

CID
CID755b2a162abeb9857e32ef852acc4668
itemNum
19
initialLetter
F
itemType
SR
itemAnswerKey
2
itemMaxScorePoints
1
origNum
x

Fred wants to determine the mean hourly wage of the working students at his school. He asks thirty of his friends their hourly wage and calculates the sample mean to be $6. Which of these statements must be true?

  1. The sample was selected randomly.
  2. Bias was present in the selection process.
  3. The sample was representative of the population.
  4. The mean hourly wage of the working students at Fred's school was $6.

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