storing data in a list while executing a program

[Pieter]

I am trying to simulate waiting on a bus that arrives at an exact schedule(in this case every 10 minutes), 5 days a week you arrive at the busstop and you notice the time in minutes that you have to wait for the bus
If you do this 500 times , the program should export a list (L2) with estimations about the exact interval for the bus to arrive at the busstop.
Hypotest(5,500) should simulte 500 weeks of waiting 5 days a week for the bus.
There must be something wrong with this program, L2 is not generated correctly?
EXPORT HypoTest(N,T)
BEGIN
PRINT();
{}▶L2;
FOR D FROM 1 TO T DO
MAKELIST(RANDINT(9),X,1,N)▶L1;
L2(D):=approx(mean(L1)*2,2);
END;
PRINT(L2);
END;