A bicycle shop sold 55 bikes ones week. The next week they only sold 22 bikes. What was the percent change in the number of bikes they sold from one week to the next? There was a % change in the number of bikes sold

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.