12.
Suppose you did a survey of male shoes sizes and the mean of that survey was size 10.5 with a standard deviation of 1.5. What is the z-score of a size of 11?
A. 0.75
B. 0.50
C. 0.67
D. 0.33

Question

12.
Suppose you did a survey of male shoes sizes and the mean of that survey was size 10.5 with a standard deviation of 1.5. What is the z-score of a size of 11?
A.		 0.75
B.		 0.50
C.		 0.67
D.		 0.33

anonymous · Answer

??

campbell_st · Answer

well its simply 

$$z = \frac{x - \mu}{\sigma}$$

so in your question 

$$z = \frac{11 - 10.5}{1.5}$$

just calculate it out

campbell_st · Answer

the z score formula is 

$$z = \frac{score - mean}{standard..deviation}$$

hope this helps

anonymous · Answer

I got 4 , for my answer

campbell_st · Answer

try it this way 

$$z = \frac{(11 - 10.5)}{1.5}$$

as the answer isn't 4