I have a concept issue i guess. If they say P(X>174) = 30% and P(X<154) = 5%, find mean and Standard deviation, isn't the 174 from P(X>174) suppose to be LESS than the mean? I need to understand when the variable is less than the mean or greater than to understand the graph of which ill be drawing. Also when they ask for questions such as P(w<x<174), we solve it both ways right? Like P(w-u/SD<x<174-u/sd) this i guess? GHSomeone help?