Emma has a wooden sculpture in the shape cuboid .The sculpture is 2.2m high,1.1m wide and 0.55m thick Emma plans to paint all the faces of the sculpture with three coats of wood varnish. The varnish sold $3.99 ,the size of a tin is 100ml and 20m square per litre. How may tins of wood varnish does Emma need to buy?

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.