Answer:
A normal curve has a bell shape where the highest point occurs in the mean and the shape is between 3 standard deviations from the mean. So, we can sketch the normal curve with a mean of 15 and standard deviation of 4 and the normal curve with a mean of 25 and standard deviation of 4 as follows
Where the blue curve has a mean of 15 and standard deviation of 4 and the red curve has a mean of 25 and standard deviation of 4.
