Problem: Does Cell Phone Use while Driving Impair Reaction Times? You work for the National Traffic and Safety Board (NTSB). You are placed in charge of investigating this problem. Using students at a local university, you design an experiment using a machine that simulates driving situations where at irregular periods a target flashed red or green. Participants were instructed to press a "brake button" as soon as possible when they detected a red light. Two driving conditions were arranged. In one, students listened to a radio broadcast while simulating driving; in the other, students carried out a conversation on a cell while speaking with someone in a separate room. For each participant, the experiment measured their mean response time over all trials (i.e., exposures to simulated red lights). The response times were measured in milliseconds. Data: The data, in an Excel spreadsheet, represents the data collected and is formatted in different ways allowing for various statistical methods to be applied.

SOFTWARE USED: MINITAB

Section A: Provide an explanation for which statistical method you applied (only those learned in our course are acceptable). Also, state ONE other possible method and explain why you did not use that method. Section B: Provide a complete and detailed analysis based on the statistical method you selected. Be sure to include all hypotheses, assumption/condition checks, decisions and conclusions for all statistical tests. Section C: Based on your analysis provide a conclusion and recommendation to your supervisor regarding the question on impaired reaction time.

Not On Cell	On Cell
632	636
600	623
560	615
525	672
459	601
544	600
513	542
470	554
556	553
531	530
599	609
537	559
619	595
536	565
554	573
467	554
525	626
508	501
529	574
470	468
512	578
487	560
515	525
499	647
448	456
558	688
589	679
814	960
519	558