Question
A jar contains 25 green and 17 purple marbles. A marble is drawn at random.
P(not a 23). Answer 17/42
P(not a 23). Answer 17/42
Answers
Steve
correct
Steve
assuming that what was meant is that the jar contains ONLY green and purple marbles . . .
I think we can say that, but it's also possible that other marbles were not mentioned.
Read Heinlein's Stranger in a Strange Land. One of the characters is a professional observer. He reports exactly what he sees. If you point to a house and ask what color it is, he'd say, "This side is white," making no assumptions about the unseen sides (if any).
I think we can say that, but it's also possible that other marbles were not mentioned.
Read Heinlein's Stranger in a Strange Land. One of the characters is a professional observer. He reports exactly what he sees. If you point to a house and ask what color it is, he'd say, "This side is white," making no assumptions about the unseen sides (if any).