Standard deviation

Probability theory and statistics

Standard deviation

Postby elevator123 » Mon Dec 01, 2014 10:11 pm

Need help solving this:

To be licensed as a practical nurse, one must make a score in the top 30% on the licensing exam. The mean score of all students taking the exam is 79 with a standard deviation of 9 points and the scores are given in whole number values. What is the least score a student can make and be considered in the top 30%?

Thank you
elevator123
 
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