under a normal curve between z scores of 10 there are always

Solution

The process of changing an X value into a z-score involves creating a signed number, called a z-score

The sign of the z-score (+ or –) identifies whether the X value is located above the mean (positive) or below the mean (negative).

The numerical value of the z-score corresponds to the number of standard deviations between X and the mean of the distribution.

Thus, a score that is located 10 standard deviations above the mean will have a z-score of 10.00. And, a z-score of +10 always indicates a location above the mean by ten standard deviations.

If your z score is lower than a -3.49 than its the probability would be .00001 or Just zero.

If your z score is higher than a +3.49 than its the probability would be 1.

Therefore, under normal curve , z score of +10 there always probability would be 1.