DATAfile: CorporateBonds

You may need to use the appropriate appendix table or technologyto answer this question.

A sample containing years to maturity and yield for 40 corporatebonds are contained in the data file named CorporateBonds.† (Roundyour answers to four decimal places.)

Company Ticker	Years to Maturity	Yield
HSBC	12.00	4.079
GS	9.75	5.367
C	4.75	3.332
MS	9.25	5.798
C	9.75	4.414
TOTAL	5.00	2.069
MS	5.00	4.739
WFC	10.00	3.682
TOTAL	10.00	3.270
TOTAL	3.25	1.748
BAC	9.75	4.949
RABOBK	9.75	4.203
GS	9.25	5.365
AXP	5.00	2.181
MTNA	5.00	4.366
MTNA	10.00	6.046
JPM	4.25	2.310
GE	26.00	5.130
LNC	10.00	4.163
BAC	5.00	3.699

Company Ticker	Years to Maturity	Yield
FCX	10.00	4.030
GS	25.50	6.913
RABOBK	4.75	2.805
GE	26.75	5.138
HCN	7.00	4.184
GE	9.50	3.778
VOD	5.00	1.855
NEM	10.00	3.866
GE	1.00	0.767
C	25.75	8.204
SHBASS	5.00	2.861
PAA	10.25	3.856
GS	3.75	3.558
TOTAL	1.75	1.378
MS	4.00	4.413
WFC	1.25	0.797
AIG	5.00	3.452
BAC	29.75	5.903
MS	1.00	1.816
T	28.50	4.930

(a)

What is the sample mean years to maturity for corporate bondsand what is the sample standard deviation?

x=  yrs=  yr

(b)

Develop a 95% confidence interval for the population mean yearsto maturity.

yr to  yr

(c)

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

x=  % s=  %

(d)

Develop a 95% confidence interval for the population mean yieldon corporate bonds.

__________ % to  % _____________