In a certain normal distribution of scores, the mean is 30 and the standard deviation is 3. Find the z-score corresponding to a score of 23. a. 10.00 c. 7.7 b. 2.33 d. –2.33 Please select the best answer from the choices provided A B C D

Step-by-step explanation:

The z-score can be calcualted with the following formula

Where is the mean and is the standard deviation.

So, in this problem, we have the following data

Replacing all values in the formula, we have

Therefore, the right answer is d.

the answer is 0.3175 hope that you ^w^

also you might actually want to put this picture up if you want people to solve it luckily i remember this question

heyyy

step-by-step explanation: