a. To design a simulation to generate frequencies, you would need to set up a model where clients randomly choose a house model (A, B, C, D, E, or F) and then randomly choose between a garage or a carport. You can use a random number generator to simulate this process multiple times and keep track of the frequency of clients choosing model B with a car garage.
b. Once you have collected the frequencies from the simulation, you can calculate the probability by dividing the number of times clients chose model B with a car garage by the total number of simulations conducted. This will give you an approximation of the probability that a client will choose model B with a car garage.