A software company is developing a new computer game. The manager wants to know what effect the difficulty level has on the length of time players survive in the game. A large group of play testers is available, most of whom already have some experience playing the new game, and each is randomly allocated to play the game with a different level of difficulty. Data was collected for the variables listed below: Time The survival time for the player (in minutes). Difficulty The difficulty level of the computer game (Easy, Normal, Hard). A randomisation test is conducted to compare the median survival times for the three different difficulty levels of the computer game. The three group medians are compared using the average absolute deviation. VIT output is shown below. Data Hard 00 o Normal OOO OO oodoo 8 Easy O od O o o 8 BO 40 50 60 70 80 10 20 Re-Randomised Data 90 Hard .00 . . Normal .. ... 600 . Easy 8 O 40 50 60 70 80 90 10 20 30 Re-Randomisation Distribution 308 / 1000 = 0.308 10 20 30 40 50 60 70 80 2.6 Which one of the following statements about this VIT randomisation test output is true? The Re-Randomised Data panel displays survival times that have been re-assigned difficulty level labels with replacement. The sample median survival time decreases as the difficulty level gets easier. O If chance is acting alone, then it would not matter which difficulty level label is attached to each survival time measurement. The Data panel will change for all 1000 re-randomisations. The Re-Randomisation Distribution displays the range of plausible values for the underlying average absolute deviation. A software company is developing a new computer game. The manager wants to know what effect the difficulty level has on the length of time players survive in the game. A large group of play testers is available, most of whom already have some experience playing the new game, and each is randomly allocated to play the game with a different level of difficulty. Data was collected for the variables listed below: Time The survival time for the player (in minutes). Difficulty The difficulty level of the computer game (Easy, Normal, Hard). A randomisation test is conducted to compare the median survival times for the three different difficulty levels of the computer game. The three group medians are compared using the average absolute deviation. VIT output is shown below. Data Hard 00 o Normal OOO OO oodoo 8 Easy O od O o o 8 BO 40 50 60 70 80 10 20 Re-Randomised Data 90 Hard .00 . . Normal .. ... 600 . Easy 8 O 40 50 60 70 80 90 10 20 30 Re-Randomisation Distribution 308 / 1000 = 0.308 10 20 30 40 50 60 70 80 2.6 Which one of the following statements about this VIT randomisation test output is true? The Re-Randomised Data panel displays survival times that have been re-assigned difficulty level labels with replacement. The sample median survival time decreases as the difficulty level gets easier. O If chance is acting alone, then it would not matter which difficulty level label is attached to each survival time measurement. The Data panel will change for all 1000 re-randomisations. The Re-Randomisation Distribution displays the range of plausible values for the underlying average absolute deviation