# Probability problem

The economics department has determined that there is a 30% chance that economy will be strong. Further inquiries reveal that if the stock market is up over the next three months, there is a 50% chance that the economy will be strong, bit if it is down, the chances are only 20%.

I made a probabilities table:

strong weak Total

up 50% 50% 100%

down 20% 80% 100%

Total 30% 70% 100%

https://brainmass.com/business/business-math/probability-inquiries-economy-79874

#### Solution Preview

P(strong)=0.30

P(Weak)=1-P(strong)=0.70

Use the following formula to calculate the probability of ...

#### Solution Summary

A formula given for solution and then probabilities computed for you is determined.

$2.19