A study of North York University students showed the mean age of all students in the first year of university to be 20.8 years old with a standard deviation of 1.11 years. A randomly selected subgroup of these first year students also averaged 20.6 years in age with a standard devaition 1.09 years. a) Are the numbers 20.8 and 1.11 statistics or parameters? Explain. Select the correct answer:

• The numbers are parameters because they were calculated for all North York University's first year students.
• The numbers are statistics because the numbers were calculated for a sample of North York University students and are therefore estimates.
• The numbers are statistics because the numbers were calculated for all North York University's first year students.
• The numbers are parameters because the numbers were calculated for a sample of North York University students and are therefore estimates.

b) Are the numbers 20.6 and 1.09 statistics or parameters? Explain. Select the correct answer:

• The numbers are statistics because the numbers were calculated for all North York University's first year students.
• The numbers are parameters because they were calculated for a sample of North York University students and are therefore estimates.
• The numbers are parameters because they were calculated for all North York University's first year students.
• The numbers are statistics because the numbers were calculated for a sample of North York University students and are therefore estimates.

c) Select any correct pair of label and value below: Select the correct answer:

• =20.6 and s=1.09
• x=20.8 and s=1.11
• x=20.8 and =1.11
• =20.8 and =1.09
• x=20.6 and =1.11
• =20.8 and s=1.09
• =20.6 and =1.11
• x=20.6 and s=1.11