8.2 Number 2

Company Ticker	Years to Maturity	Yield
HSBC	24.25	1.851
GS	20.50	4.260
C	22.00	8.055
MS	2.75	7.806
C	2.25	4.004
TOTAL	9.00	6.858
MS	24.00	0.922
WFC	5.75	5.430
TOTAL	26.25	4.028
TOTAL	29.00	6.638
BAC	17.50	4.453
RABOBK	28.75	5.984
GS	28.00	3.742
AXP	3.25	7.022
MTNA	12.50	7.444
MTNA	26.25	1.701
JPM	10.75	5.371
GE	18.50	2.678
LNC	5.25	5.899
BAC	3.25	5.092
FCX	26.75	3.950
GS	3.00	3.540
RABOBK	12.00	2.563
GE	13.50	1.286
HCN	16.00	5.521
GE	10.50	4.948
VOD	9.00	0.820
NEM	24.25	8.125
GE	24.25	6.486
C	16.75	7.195
SHBASS	23.00	5.276
PAA	21.00	7.240
GS	4.75	2.752
TOTAL	5.00	3.706
MS	11.25	4.855
WFC	7.50	2.319
AIG	28.50	7.803
BAC	20.25	4.884
MS	2.75	2.678
T	17.50	7.075

a. What is the sample mean years to maturity for corporate bonds and what is the sample standard deviation?

Mean: ______ (to 4 decimals)

Standard Deviation: ______ (to 4 decimals)

b. Develop a 95% confidence interval for the population mean years to maturity. Please round the answer to four decimal places.

( ________ , ________ ) years

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

Mean: ______ (to 4 decimals)

Standard Deviation: ______ (to 4 decimals)

d. Develop a 95% confidence interval for the population mean yield on corporate bonds. Please round the answer to four decimal places.

( ________ , ________ ) %