SOLUTION: The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a standard deviatin of $10. What is the 25th percentile?

Algebra ->  Probability-and-statistics -> SOLUTION: The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a standard deviatin of $10. What is the 25th percentile?      Log On


   

Question 609902: The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a standard deviatin of $10. What is the 25th percentile?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, understand now You were referring to this Inquiry

monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10

What is the 25th percentile: (x-50)/10 = -.6745  ||Note: NORMSINV(0.25)= -.6745

 (x-50)/10 = -.6745

    x  = $43.26