last one
Step-by-step explanation:
3 1/2
answer is last one
z = -2.83
<u>Explanation:</u>
Given:
Mean, μ = 68
Standard deviation, σ = 6
Data point, x = 51
Z score, z = ?
We know:

Substituting the value we get:

A negative z score says that the data point is below average.
well if you add in to the number that you have for example as the question you put up 2+2 it will add up all together to make up 4