Homework Help: math

Posted by purple on Wednesday, March 31, 2010 at 8:54pm.

A box contains two dimes and four quarters. What is
the expected value of a single draw of one coin under
the assumption that one cannot distinguish between the
coins on the basis of size?

can you please explaing for elementery students

math - PsyDAG, Thursday, April 1, 2010 at 11:23am
There are 6 coins. Therefore the probability of 10¢ = 2/6 = 1/3 and the probability of 25¢ = 4/6 = 2/3.

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