Question

Sketch a normal curve that has a mean of 15 and standard deviation of 4. On the same x-axis, sketch another normal curve that has a mean of 25 and standard deviation of 4. Describe the two normal curves.

Answer 1

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.