I'm a new econ student and am having trouble finding a way to answer this: A macro policymaker who is in the "active" policy school would readily accept that the "invisible hand" idea explains the equilibrium solution in all markets. Agree or disagree.

Customers arrive at rich dunn's styling shop at a rate of 3 per hour, distributed in a poisson fashion. rich can perform an average of 5 haircuts per hour, according to a negative exponential distribution.a) the average number of customers waiting for haircuts= customersb) the average number of customers in the shop= customersc) the average time a customer waits until it is his or her turn= minutesd) the average time a customer spends in the shop= minutese) the percentage of time that rich is busy= percent