answer with explanation

Pregunta 4 l2 puntos) An insurance portfolio has 201 contracts. The insurer uses the model of individual risks to set an annual variance premium. Assume that each contract has a mean of 6 and a standard deviation of 3, the stakeholders expect to collect a yearly dividend of 0.4%, and they are willing to accept a risk of bankruptcy of 0.01%. What is the balanced standard deviation premium that the insurance company should charge to the whole portfolio