Hinuku Posted October 7, 2011 Report Share Posted October 7, 2011 Hi, I am having trouble with this question: The graph shows a normal curve for the random variable X, with mean μ and standard deviation . It is known that p(X 12) = 0.1. (a) The shaded region A is the region under the curve where x 12. Write down the area of the shaded region A. It is also known that p(X 8) = 0.1. (b) Find the value of μ, explaining your method in full. © Show that = 1.56 to an accuracy of three significant figures. (d) Find p(X 11). I actually have no idea how to solve this problem from point c). I would be glad if someone could explain!! x is greater than equal than 12 and smaller than equal than 8* 1.56 = standard deviation* Thanks Reply Link to post Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.