Marketing estimates that a new instrument for the analysis of soil samples will be very successful, moderately successful, or unsuccessful, with probabilities 0.26, 0.66, and 0.08, respectively. The yearly revenue associated with a very successful, moderately successful, or unsuccessful product is $12 million dollars, $6 million dollars, and $1 million dollars, respectively. Let the random variable X denote the yearly revenue of the product in millions of dollars. Required:
Evaluate the cumulative distribution function of X at specified values.