A statistician is studying the cost of treating families in emergency room visits. He finds that the mean wait time for a family visiting the emergency room is 2.75 hours with a standard deviation of 1.25 hours. He also found that per hour a family is charged $75 with a charge of $50 for just using the emergency room.

Given the statistician's data, what is the mean and standard deviation cost for a family visiting the emergency room?

Mean = 256.25 and SD = 93.75

Mean = 256.25 and SD = 10.83

Mean = 256.25 and SD = 194.23

Mean = 206.25 and SD = 93.75

Mean = 212.5 and SD = 94.01