Julio sells computers at an electronics store. Let the random variable C represent the number of computers that Julio sells in o
ne week. The following table shows the probability distribution of C . Julio earns $800 per week, with a commission of $200 per computer sold. What is the expected value of Julio’s earnings for one week?
Multiplying with 6 is like multiplying with 3 because, you just double it. Let's say 3 × 4 = 12 Its the same as 6 × 2 = 12 ... which is just 3 + 3 + 3 + 3 . ((: