A traffic engineer is counting the number of vehicles by type that turn into a residential area. The table below shows the results of the counts during a four-hour period. What is the probability that the next vehicle passing is an SUV?
Type of vehicle Number
Car
281
SUV
405
Van
65
Small truck
256
Large truck
219
Dump truck
24
Other
77
To find the probability that the next vehicle passing is an SUV, we need to find the ratio of the number of SUVs to the total number of vehicles.
Total number of vehicles = Sum of all types of vehicles = 281 + 405 + 65 + 256 + 219 + 24 + 77 = 1327
Number of SUVs = 405
Probability = Number of SUVs / Total number of vehicles = 405 / 1327 ≈ 0.305
Therefore, the probability that the next vehicle passing is an SUV is approximately 0.305.