Age of CEO 

57  49  57  63  58 
56  67  62  61  61 
53  58  52  58  56 
66  56  59  52  63 
52  59  57  64  53 
54  65  46  58  58 
57  50  62  57  58 
52  48  59  54  62 
66  46  52  63  57 
52  61  50  55  55 
64  48  56  58  55 
60  51  62  62  50 
45  50  52  55  58 
57  52  53  61  
55  63  54  52  
59  50  56  57  
53  52  48  62  
61  56  63  55  
49  62  53  52  
62  54  61  50  
55  60  47  62  
53  54  57  64 
Data  
Sample Standard Deviation  5.1  
Sample Mean  56.3  
Sample Size  101  
Confidence Level  0.9950  
Intermediate Calculations  
Standard Error of the Mean  0.5077  
Degrees of Freedom  100.0 
t Value?  
Interval Half Width?  
Confidence Interval  
Interval Lower Limit?  
Interval Upper Limit?  
Excel Addon PHStat used
Confidence Interval Estimate for the Mean 

Data 

Sample Standard Deviation 
5.1020 
Sample Mean 
56.2970 
Sample Size 
101 
Confidence Level 
99.5% 
Intermediate Calculations 

Standard Error of the Mean 
0.5077 
Degrees of Freedom 
100 
t Value 
2.8707 
Interval Half Width 
1.4574 
Confidence Interval 

Interval Lower Limit 
54.8397 
Interval Upper Limit 
57.7544 
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