A study of North York University students showed the mean age of all students in the first year of university to be 19.6 years old with a standard deviation of 1.15 years. A randomly selected subgroup of these first year students also averaged 19.3 years in age with a standard devaition 1.17 years. a) Are the numbers 19.6 and 1.15 statistics or parameters? Explain.

• 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.
• 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.

b) Are the numbers 19.3 and 1.17 statistics or parameters? Explain.

• 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 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.

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

• x=19.6x=19.6 and =1.15=1.15
• x=19.6x=19.6 and s=1.15s=1.15
• =19.6=19.6 and =1.17=1.17
• x=19.3x=19.3 and s=1.15s=1.15
• =19.3=19.3 and =1.15=1.15
• x=19.3x=19.3 and =1.15=1.15
• =19.3=19.3 and s=1.17s=1.17
• =19.6=19.6 and s=1.17