Hard maths question. See if you can answer it :)

  • 0 votes

The random variable X ~ N(μ, 52) and P(X < 23) = 0.9192.

(a) Find the value of μ.
(b) Write down the value of P(μ < X <23).

Posted Mon 14th May, 2012 @ 23:19 by Oliver

4 Answers

  • 0 votes

a) 12.9

b)0.4192

Are either of those right?

Answered Tue 15th May, 2012 @ 17:12 by Aishwarya
  • -1 votes
Answered Tue 15th May, 2012 @ 17:17 by LP-FTW
  • -1 votes

i got

a) 95.8

b) 0.4192

??

Answered Thu 17th May, 2012 @ 23:13 by Imogen
Edited by Imogen on Thu 17th May, 2012 @ 23:14
  • -3 votes

yeah i gv up =D

Answered Tue 15th May, 2012 @ 09:03 by Sabah x