Statistics: Finding percentile given mean and standard deviation

Question: statistics and probability
A distribution of values is normal with a mean of 227.2 and a standard deviation of 82.3.Find P20, which is the score separating the bottom 20% from the top 80%. P20 = Enter your answer as a number accurate to 4 decimal places. 

------------------------

Answered By:

Chance V.
Patient tutor with a passion for math!

------------------------

------------------------

About: Wyzant Ask an Expert offers free answers to your toughest academic and professional questions from over 65,000 verified experts. It’s trusted by millions of students each month with the majority of questions receiving an answer within 1 hour of being asked. If you ever need more than just an answer, Wyzant also offers personalized 1-on-1 sessions with experts that will work with you to help you understand whatever you’re trying to learn.