You consider investing in a new hotel. The expected revenues are distributed normally with an average of 3 million dollars and a standard deviation of 1 million dollars. What is the probability that your revenues will be lower than 2 million dollars?

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since we are 1 sd from the mean this makes life a bit easier

z = (x-mean)/sd
z = (2-3)/1 = -1
do we use a ztable or just do an empirical rule estimate?

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