Question

If a normal distribution has a mean of 62 and a standard deviation of 12 what is the z-score for a value of 80

a:1
b:1.5
c:2
d:0.5

Answer 1

Option B:→ 1.5

Explanation:

Answer 2

Answer with explanation:

`\text{Mean}=\mu = 62\\\\ \text{standard deviation}=\sigma=12\\\\ \bar X=80\\\\Z_(score)=(\bar X -\mu)/(\sigma)\\\\Z_(score)=(80-62)/(12)\\\\Z_(score)=(18)/(12)\\\\Z_(score)=1.5`

Option B:→ 1.5