1)     A sample containing years to maturity and yield for 40 corporate bonds are contained in the data file named ''Corporate Bonds"

1)     A sample containing years to maturity and yield for 40 corporate bonds are contained in the data file named ''Corporate Bonds".

a.     What is the sample average years to maturity for corporate bonds? What is the sample standard deviation?

b.     Develop a 95% confidence interval for the estimate of Average Years to Maturity for all corporate bonds.

c.     What is the sample yield on corporate bonds? What is the sample standard deviation?

d.     Develop a 95% confidence interval for the average yield on all corporate bonds.