For which function is f(x) not equal to f -1(x)? a. f(x)= -x b. f(x)=2/x c. f(x)=2x d. f(x)=2-x

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.