Part III: Problem Solving Write your complete solution including the graph of the problems written below. Make sure to take a photo of your complete solution and submit your answer. Limited to 5 files only 1)The mean height of Grade 11 students at a certain University is 150 cm and the standard deviation is 12 cm. Assuming that the heights are normally distributed, what percent of the heights is: a) greater than 156 cm? b) less than 145 cm