A data analyst working for the NZ Transport Agency wanted to evaluate whether a new road marking system is effective in lowering the number of crashes on New Zealand roads. They identified which roads were scheduled to receive the new marking system this year and measured the total number of crashes in the month before and in the month after the new system was implemented. These totals were compared to crash data gathered at the same time from similar locations that were scheduled to receive the new marking system next year. What type of experimental design is this? O a. Interrupted time-series with a true control group O b. Pretest-posttest with a non-equivalent control group O c. Interrupted time-series with a non-equivalent control group O d. Pretest-posttest with a true control group
A data analyst working for the NZ Transport Agency wanted to evaluate whether a new road marking system is effective in lowering the number of crashes on New Zealand roads. They identified which roads were scheduled to receive the new marking system this year and measured the total number of crashes in the month before and in the month after the new system was implemented. These totals were compared to crash data gathered at the same time from similar locations that were scheduled to receive the new marking system next year. What type of experimental design is this? O a. Interrupted time-series with a true control group O b. Pretest-posttest with a non-equivalent control group O c. Interrupted time-series with a non-equivalent control group O d. Pretest-posttest with a true control group
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A data analyst working for the NZ Transport Agency wanted to evaluate whether a new road marking system is effective in lowering the number of crashes on New Zealand roads. They
identified which roads were scheduled to receive the new marking system this year and measured the total number of crashes in the month before and in the month after the new system
was implemented. These totals were compared to crash data gathered at the same time from similar locations that were scheduled to receive the new marking system next year. What type
of experimental design is this?
O a. Interrupted time-series with a true control group
O b. Pretest-posttest with a non-equivalent control group
O c. Interrupted time-series with a non-equivalent control group
O d. Pretest-posttest with a true control group
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