Many colleges use exit examinations to determine if students can move from remedial math to college level math course. Suppose that in one semester on a college’s exit exam there is a mean score of 25 and a standard deviation of 6.

What percentage of the scores fall between 10 and 40?
A) 90%
B) 98.76%
C) 99.7%
D) 95%

Question

Many colleges use exit examinations to determine if students can move from remedial math to college level math course. Suppose that in one semester on a college’s exit exam there is a mean score of 25 and a standard deviation of 6.

What percentage of the scores fall between 10 and 40?
A) 90% 
B) 98.76% 
C) 99.7% 
D) 95%

anonymous · Answer

15. What percentage of the scores are above 20?
A) 20.33% 
B) 25% 
C) 79.67% 
D) 75% 

16.
What percent of the scores are below 7?
A) 0.25% 
B) 1% 
C) 2.5% 
D) 0.13% 

17.
What percent of the scores fall between 22 and 35?
A) 64.4% 
B) 50% 
C) 68% 
D) 75.2%