A set of test scores are normally distributed. The mean is 100 and the standard deviation is 20. These scores are converted to standardized units. What are z-scores of the mean and median

The z-scores of both the mean and the median are zero.

Step-by-step explanation:

In a normal distribution, the mean and median values will be the same, in this case, 100. Therefore, both the mean and median will have the same score.

The z-score is given by:

For X = 100:

The z-scores of both the mean and the median are zero.

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

the answer is 5/14.

hope this .