To investigate this, a random sample of 18 bean leaflets was taken. The freezing temperatures were: -1.6 -0.9 -1.3 -2.7 -1.9 -2.2 -3.1 -2.3 -2.1 -0.2 -2.7 -2.9 -2.3 -3.8 -3.6 -4.3 -2.0 -3.3. Make a histogram of the data and comment on the shape. Based on this histogram, is it reasonable to assume that the temperatures at which bean leaflets freeze are approximately normally distributed?