The discrete random variable X is the number of students that show up for Professor Smith's office hours on Monday afternoons.The table below shows the probability distribution for X.What is the expected value E(X) for this distribution? 
Definitions:
Effective Rate
The actual interest rate an investor receives or pays on a loan or investment, taking into account the compounding of interest.
Callable Bond
A type of bond that can be redeemed by the issuer before its maturity date at a predetermined call price.
Serial Bond
A bond issue that matures in installments over a period rather than having a single maturity date.
Contract Rate
The agreed-upon rate or price specified in a contract for the provision of goods or services.
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