Final answer:
The probability of selecting a sedan first and a van second from a production batch would be computed using conditional probability, but the necessary specific production numbers are not provided to calculate an exact answer.
Step-by-step explanation:
The question asks for the probability that the first vehicle selected is a sedan and the second vehicle is a van from an automobile manufacturing plant's production of the day. To calculate this, you would typically use the formula for conditional probability, P(A and B) = P(A) * P(B given A), where A is the event of selecting a sedan first and B is the event of selecting a van second. However, the specific numbers of each type of vehicle produced that day are not provided. In an actual scenario, if the plant produced S sedans and V vans out of a total of T vehicles, the probability of selecting a sedan first would be S/T, and the probability of selecting a van second would be V/(T-1) because one vehicle has already been removed from the pool. The overall probability would be (S/T) * (V/(T-1)). Without the specific numbers, a final numerical answer can't be given.