A woman walks for a distance of 3km at a speed of 5kmh-1 for a third of the journey and 7kmh-1 for 2 thirds of the journey. How long does it take her to walk 3km?

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.