And so this is a 0.36 chance. So what they want us to figure out are what are the mean and standard deviation of his net gain? So let's first figure out the mean of N. Well, if you scale a random variable, the corresponding mean is going to be scaled by the same amount. And if you shift a random variable, the corresponding mean is going to be shifted by the same amount. So the mean of N is going to be 10 times the mean of X, minus 15, which is equal to 10 times 1.2 minus 15. This is 1.2. So it is 12 minus 15, which is equal to negative three.