At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:At least 14.3 seconds
A. 84%
B. 50%
C. 13.5%
D. 16%
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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= 6
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