For a normal distribution, the z value for an x value that is to the right of the mean is always:

In a normal distribution, the z value for an x value that is to the right of the mean will always be positive while on the other hand if the z value for an x value that is to the left of the mean it will always be negative. It is because left side is always negative and right side is always positive.

Yes. there is a constant ratio of number of calories to gram of protein.12/3=24/4=32/8=44/11=4