student wanted to compare two types of commuting options. One type is carpooling and the other is taking a commuter train, It is a common belief that arpooling saves more time. This belief is tested by having 10 students commute to school by each mode of ransportation and recording the time of arrival at school each morning. A coin flip was used to determine which type of transportation that a student would use ndicated that there was no difference in the two types of transportation. Complete parts (a) through (!) below. (a) What type of experimental design is this ? O Matched-pairs design O Completely randomized design Case-control study O Randomized block design (b) What is the response variable in this study? O The students O The time of arrival O The types of transportation O The coin flip (c) What is the factor that is set to predetermined levels? What is the treatment? O A. The factor is the type of transportation. The treatments are carpooling and taking a commuter train, O B. The factor is the students. The treatments are the 10 different students. O C. The factor is the coin flip. The treatments are heads and tails. O D. The factor is the time of arrival. The treatments are carpooling and taking a commuter train. (d) Identify the experimental units. Choose the correct answer below. O The students O The time of arrival O The types of transportation O The coin flip (e) Why is a coin used to decide the transportation that a student would use first? O A. To eliminate bias as to which transportation was used first O B. To show that the experiment is fair O C. To introduce an element of chance into the experiment O D. None of the above (f) Draw a diagram to illustrate the design. Choose the correct diagram below. OB Figure 2 OA Figure 1 Random carpooling