Scott had 3 equal stacks of baseball cards. He gave one stack to his brother Shawn.
2 answers:
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Answer: 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:
