7) During student-teacher negotiations at a certain high school, teachers seek t

Question

7) During student-teacher negotiations at a certain high school, teachers seek to change the number of times students are allowed to be tardy, saying that the semester "average" is 8 days of tardiness per student. The students counter that the "average" student is only tardy 4 times per semester. Explain how both sides may be correct, identifying the measure of center you think each side is using and why the difference might exist. 8) A survey of autos parked in student and staff lots at a large university cassified the brands by country of origin. The results are listed in the table below, and a graphical display of the conditional distributions of origin by driver is given. Distribution of Origin by Driver 100% D Asian 90% t- 80% 70% 60% 50% 40% 30% 20% 10% European American Students Staff Driver Do you think that origin of the car is independent of the type of driver? Refer to the graph in your explanation.

Explanation / Answer

There are two types of drivers 1) Students 2) Staff and these drivers are of three origins 1) Asian 2) European 3) American, from the above depiction it can be inferred that the origin of the car is idependent of the type of driver because from the observations there no consistent direct or inverse relation between the people of same origin who are Students or Staff.

1-For instance The proportion American students/staff is constant 40% 2- The proportion of European students/staff is constant is 15%/30% respectively 3- The proportion of Asian students/staff is constant is 35%/20% respectively

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