A bicycle shop will offer 2 specially priced children's models at a sidewalk sale. the basic model will sell for $120 and the deluxe model for $150. past experience indicates that sale of the basic model will have a mean of 5.4 bikes and a standard deviation of 1.2. the sale of the deluxe model will have a mean of 3.2 bikes with a standard deviation of 0.8 bikes. the cost of setting up the sidewalk sale is $200.
Whats the net profit explained in terms of random variable, mean and standard deviation of net profit?