The jackson family is undecided about whether or nara buy a new car of the probability is 9 that they will buy one, and if the probability is that they will
buy a Ford, and if the probabinty that they will purchase a cong
more than 20 miles per gallon what is the probablity that the webwether
a car getting more than 20 miles per al on or a Ford fiere e ne todas​

The question is incomplete. The complete question is :

The Jackson family is undecided about whether or not to buy a new car. If the probability is .9 that they will buy one, and if the probability is .3 that they will buy a Ford, and if the probability is .4 that they will purchase a car getting more than 20 miles per gallon, what is the probability that they will buy either a car getting more than 20 miles per gallon or a Ford, if all Fords get more than 20 miles per gallon?

Solution :

Given that :

The probability of buying a new car,  

Probability of buying Ford = 0.3

That is, if Jackson family buy a car that is a ford car,

                                                                                                = 0.27

The probability for getting more than 20 miles per gallon = 0.4

That is if Jackson family buy a car that have more than 20 miles per gallon mileage,

The conditions

All of the car have more than 20 miles per gallon mileage.

It means that buying a ford car is subset of getting more than 20 miles per gallon.

Therefore, the probability of buying a car either getting more than 20 miles per gallon or ford =

Therefore,

                                                = 0.36

Thus the probability that Jackson family is buying a car either getting more than 20 miles per gallon or ford is 0.36

answer; swot analysis;