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A Large Number Of Students Took A Departmental Math Test, Of Whom 8 Percent Scored

A Large Number Of Students Took A Departmental Math Test, Of Whom 8 Percent Scored

A Large Number Of Students Took A Departmental Math Test, Of Whom 8 Percent Scored

A large number of students took a departmental math test, of whom 8 percent scored 90 or more from the scale of 100.  The scores have a bell-shaped distribution with a standard deviation of 8.5.
17 If the minimum score to pass the test is 62, what fraction of the students failed the test?  
a 0.0526                
b 0.0409                
c 0.0301                
d 0.0262                
                   
18 The middle interval which includes 95% of the test scores is _______ to _______.   (Round the scores to the nearest integer.)
 
a 60 96              
b 61 95              
c 63 93              
d 64 94