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
284
SUV
434
Van
76
Small truck
276
Large truck
228
Dump truck
22
Other
63
To find the probability that the next vehicle passing is an SUV, we need to calculate the ratio of the number of SUVs to the total number of vehicles.
The total number of vehicles is the sum of all the counts:
284 + 434 + 76 + 276 + 228 + 22 + 63 = 1383
Therefore, the probability of the next vehicle passing being an SUV is:
434 / 1383 ≈ 0.314