Open University M245 <br/><br/>
Probability and statistics course : unit 6. Confidence, /  [Books]. 
Open University.  
 - Milton Keynes,   Open University,   1984. 
 - 44p. :   . ill. ;   30cm. 
<br/><br/><label>ISBN: </label>0335141501 
<br/><br/><label>Subjects--Personal Names: </label><br/>Probabilities<br/>Statistics.