Question

roberto wanted to examine the impact of newly enacted laws about cell phone use while driving. he did so by comparing the number of deaths due to car crashes before and after the laws were implemented. he did this in multiple provinces and compared the changes in deaths with provinces that did not implement cell phone laws in order to more clearly understand the impact of the new laws. which design did he use? question 8 options: a) cost-benefit analysis b) multiple time-series design c) survey design d) true experimental design

Answer 1

Roberto's study, which compares car crash-related deaths before and after the implementation of cell phone use laws while driving in multiple provinces, uses a multiple time-series design.

Step-by-step explanation:

Roberto utilized a multiple time-series design for his study. This design is characterized by collecting data at multiple time points before and after an intervention—in Roberto's case, the enactment of cell phone use laws while driving—and then comparing these data points. The control group in his study consists of provinces that did not implement new cell phone laws. By comparing data before and after the law's implementation across different locations, and with locations that did not change their laws, Roberto could analyze the impact of the laws on car crash-related deaths in a quasi-experimental manner.