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.

It's not clear if there were 29 participants or 58 participants so Would this be paired or independent t tests?? pooled or unpooled?

Minitab

THANKS A TON!

On Cell	Response Time
No	632
No	600
No	560
No	525
No	459
No	544
No	513
No	470
No	556
No	531
No	599
No	537
No	619
No	536
No	554
No	467
No	525
No	508
No	529
No	470
No	512
No	487
No	515
No	499
No	448
No	558
No	589
No	814
No	519
Yes	636
Yes	623
Yes	615
Yes	672
Yes	601
Yes	600
Yes	542
Yes	554
Yes	553
Yes	530
Yes	609
Yes	559
Yes	595
Yes	565
Yes	573
Yes	554
Yes	626
Yes	501
Yes	574
Yes	468
Yes	578
Yes	560
Yes	525
Yes	647
Yes	456
Yes	688
Yes	679
Yes	960
Yes	558