Marketing estimates that a new instrument for the analysis of soil samples will be very successful, moderately successful, or un
successful with probabilities 0.3, 0.6, and 0.1, respectively. The yearly revenue associated with a very successful, moderately successful, or unsuccessful product is $10 million, $5 million, and $1 million, respectively. Let the random variable X denote the yearly revenue of the product. Determine the probability mass function of X.
In this case, the probability mass function of X is the function that relates the money produced for the product with the probability of obtain this profit of the product.
The mass function will be:
X (millions) 1 5 10
P(x) 0,1 0,6 0,3
This is a probability mass function because the sum of the probabilities of each value is 1. 0.1+0.6+0.3=1
