At Miami Dade Community College, administrators want to determine ...

[mpobi80]

At Miami Dade Community College, administrators want to determine the average commuting distance for their students who commute to school. They randomly select 300 students who commute and ask them the distance of their commute to campus. From this group a mean of 15.4 miles is computed. Find the statistic in this example.
 A. The 300 randomly selected commuting students.
  B. 15.4 miles.
  C. The mean commute distance for all commuting students at the college.
  D. All commuting students enrolled at the college.

Question 2

At Grand Rapids Community College, administrators want to determine the average commuting distance for their students who commute to school. They randomly select 150 students who commute and ask them the distance of their commute to campus. From this group a mean of 18.2 miles is computed. The parameter in this example is:
 A. The mean commute distance for all commuting students at the college.
  B. 18.2 miles.
  C. All commuting students enrolled at the college.
  D. The 150 randomly selected commuting students.

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Answer to Question 1

Analysis:
A. Incorrect. The statistic from this group is the computed mean of 15.4 miles.
B. Correct. The statistic from this group is the computed mean of 15.4 miles.
C. Incorrect. The statistic from this group is the computed mean of 15.4 miles.
D. Incorrect. The statistic from this group is the computed mean of 15.4 miles.
ANSWER : B

Answer to Question 2

Analysis:
A. Correct. The parameter in this example is the mean commute distance for all commuting students at the college.
B. Incorrect. The parameter in this example is the mean commute distance for all commuting students at the college.
C. Incorrect. The parameter in this example is the mean commute distance for all commuting students at the college.
D. Incorrect. The parameter in this example is the mean commute distance for all commuting students at the college.
ANSWER : A