In a certain city, projections for the next year indicate there is a 20% chance that electronics jobs will increase by 1000, a 50% chance that they will increase by 300, and a 30% chance they will decrease by 700. Find the expected change in the number of electronics job in the city next year

The expected change in the number of electronics job in the city next year is of 140.

Step-by-step explanation:

We have these following probabilities:

20% chance it increases by 1000.

50% chance it increases by 300.

30% it decreases by 700.

Find the expected change in the number of electronics job in the city next year

We multiply each outcome by it's probability. So

E = 0.2*1000 + 0.5*300 - 0.3*700 = 140

The expected change in the number of electronics job in the city next year is of 140.