Harrison water sports has two retail outlets: seattle and portland. the seattle store does 60 percent of the total sales in a year. further analysis indicates that if a sale is made in seattle, there is 0.40 probability this is a sale of boat accessories, while if a sale is made at the portland store this probability is 0.20. if harrison water sports knows that a boat accessory has been sold, what is the probability this sale has occurred in seattle:

P = 0.75

Step-by-step explanation:

Hi!

The sample space of this problems is the set of all the possible sales. It is divided in the disjoint sets:

We have also the set of sales of boat accesories , the colored one in the image.

We are given the data:

From these relations you can compute the probabilities of the intersections colored in the image:

You are asked about the conditional probability:

To calculate this, you need   . In the image you can see that the set is the union of the two disjoint pink and blue sets. Then:

Finally:

ok

step-by-step explanation:

answer: no, but if it does it's a obvious pattern.

step-by-step explanation: