Exhibit 12-3
In order to determine whether or not a particular medication was effective in curing the common cold, one group of patients was given the medication, while another group received sugar pills. The results of the study are shown below. 
We are interested in determining whether or not the medication was effective in curing the common cold.
-Refer to Exhibit 12-3. The expected frequency of those who received medication and were cured is
Definitions:
Yield To Maturity
The total return anticipated on a bond if the bond is held until it matures, considering all interest payments and its current price.
Forward Rate
The agreed-upon interest rate for a financial transaction that will take place in the future, mainly used in the context of currencies and bonds.
1-Year Bond
A bond that matures in one year, often used for short-term investment strategies.
Zero-Coupon Bond
A zero-coupon bond is a debt security that doesn't pay interest (a coupon) but is traded at a deep discount, rendering profit at maturity when the bond is redeemed for its full face value.
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