Bonds are loans to a company or government for a set amount of time they earn interest and are considered low risk investments.
Bonds are investments that have a fixed interest rate and a fixed amount of time which it will be repayed. Bonds are created when a company or government wants to finance something using investors instead of a bank. Bonds are more dependable and lower risk than stocks.
The z score can be calculated by the difference of population and sample mean divided by standard error. Standard error can be calculated as the standard deviation divided by square root of sample size From the given the standard error: SE = 12/sqrt (20) = 2.68 Z = (208 -195)/2.68 = 4.85
