ashen igloo
Hey 
can someone help me how to calculate the probability?
The text says:
A company participates in a tender for a project that includes 5 partial services whose random costs K1, . . . K5 (in euros) are still dependent on future energy prices, tariff prices, tariffs, etc. The costs K1, . . . , K5 are assumed to be normally distributed (Ki ∼ N(µi, σ2i) for i = 1, . . . , 5) and independent, whereby the following parameters can be assumed can be assumed (see picture)
The company got the contract with its bid price of 9,000,000 (euros).
a) Calculate the probability that cost 1 costs more than EUR 1.2 million
the solution is given (see the blue text on second screenshot). But I don't get why. Can anyone help me out? 
prime hollow