SOLUTION: A distribution of values is normal with a mean of 40.2 and a standard deviation of 61.1. Find P45, which is the score separating the bottom 45% from the top 55%. P45 = Ent

Algebra ->  Probability-and-statistics -> SOLUTION: A distribution of values is normal with a mean of 40.2 and a standard deviation of 61.1. Find P45, which is the score separating the bottom 45% from the top 55%. P45 = Ent      Log On


   

Question 1180333: A distribution of values is normal with a mean of 40.2 and a standard deviation of 61.1.
Find P45, which is the score separating the bottom 45% from the top 55%.
P45 =
Enter your answer as a number accurate to 4 decimal places.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
Normal Distribution:  µ = 40.2 and σ = 6.1 (Using 6.1)
Using TI or similarly an inexpensive calculator like a Casio fx-115 ES plus
Continuous curve
P45 = invNorm(.45, 40.2, 6.1) = 39.4335

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