Suppose that the sick leave taken by the typical worker per year has = 10,

Question:

Suppose that the sick leave taken by the typical worker per year has μ = 10, σ = 2, measured in days. A firm has n = 20 employees. Assuming independence, how many sick days should the firm budget if the financial officer wants the probability of exceeding the number of days budgeted to be less than 20%?