Johnny has his own company doing yard work his sales are normally distributed with mean of 450 a day standard deviations 110 what is the probability that he will make greater than 230

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.