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Q 2       A COLLEGE PROFESSOR HAS ACCUMULATED A RECORD OF GRADES ACHIEVED BY HIS STUDENTS...

Q 2       A COLLEGE PROFESSOR HAS ACCUMULATED A RECORD OF GRADES ACHIEVED BY HIS STUDENTS OVER A MULTI YEAR PERIOD. THE MEAN OVER THE PERIOD IS 83.5, WITH A SAMPLE STANDARD DEVIATION OF 5.5 WHAT IS THE PROBABILITY THAT                          
                                  
                                  
       A STUDENT ACHIEVES A GRADE GREATER THAN 97 ?                          
       A STUDENT ACHIEVES A GRADE GREATER THAN 80. ?                          
       A STUDENT ACHIEVES A GRADE LESS THAN 82 ?                          
       A STUDENT ACHIEVES A GRADE LESS THAN 86 ?                          
       A STUDENT ACHIEVES A GRADE LESS BETWEEN 81 & 86                          
       A STUDENT ACHIEVES A GRADE LESS BETWEEN 75 & 82                          
       A STUDENT ACHIEVES A GRADE LESS BETWEEN 87 & 92                          
                                  

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