Random variables(sigma and mu)?

Suppose x is a normally distributed random variable with \mu = 11 and \sigma = 2.2. Find each of the following probabilities:





P(6.7 %26lt; or = x %26lt; or =13.2 ) =





(b) P(9.7 %26lt; or = x %26lt; or = 13.4 ) =








I'm stuck on some homework problems and have a few to do. If you do not wish to give me answers, could you PLEASE explain how to set this up so I can complete this by midnight? Thank you so much!





(c) P(9.2 %26lt; or = x %26lt; or = 13.9 ) =





(d) P(x %26gt; or = 10.3 ) =





(e) P(x %26lt; or = 15 ) =

Random variables(sigma and mu)?
If you use a ti 89 graphing calculator, you just plug in the numbers and it solves for standard deviation and average.