A study of North York College students showed the mean age of all students in the first year of college to be 19.9 years old with a standard deviation of 1.16 years. A randomly selected sample of...


A study of North York College students showed the mean age of all students in the first year of college to be 19.9 years old with a standard deviation of 1.16 years. A randomly selected sample of these first year students also averaged 20.2 years in age with a standard deviation 1.14 years.


a) Are the numbers 19.9 and 1.16 statistics or parameters? Explain.




  • The numbers are statistics because the numbers were calculated for all North York College's first year students.

  • The numbers are parameters because they were calculated for all North York College's first year students.

  • The numbers are statistics because the numbers were calculated for a sample of North York College students and are therefore estimates.

  • The numbers are parameters because the numbers were calculated for a sample of North York College students and are therefore estimates.



b) Are the numbers 20.2 and 1.14 statistics or parameters? Explain.




  • The numbers are statistics because the numbers were calculated for all North York College's first year students.

  • The numbers are parameters because they were calculated for all North York College's first year students.

  • The numbers are statistics because the numbers were calculated for a sample of North York College students and are therefore estimates.

  • The numbers are parameters because they were calculated for a sample of North York College students and are therefore estimates.



c) Select all correct symbol/value pair below (more than one may correct):






  • ¯x=19.9x¯=19.9 and s=1.16s=1.16

  • ¯x=19.9x¯=19.9 and σ=1.16σ=1.16

  • μ=20.2μ=20.2 and σ=1.16σ=1.16

  • μ=19.9μ=19.9 and σ=1.14σ=1.14

  • ¯x=20.2x¯=20.2 and s=1.16s=1.16

  • μ=20.2μ=20.2 and s=1.14s=1.14

  • ¯x=20.2x¯=20.2 and σ=1.16σ=1.16

  • μ=19.9μ=19.9 and s=1.14


Jun 02, 2022
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