5. MDM Farms grows normally distributed potatoes, and is testing a new crop. After 4 months, 20 plants produce potatoes with the following weights (in kg): 07,14,14,13,03,14,06,1.3,13,11,09,15,11,15,0.6,14,1.1,0.5,0.6,0.8 a. Find the mean and standard deviation of the sample. (3 marks) b. What percent of potatoes grown from this crop will be over 2 kg