Answer:
z-score
Step-by-step explanation:
Since we are given the mean and standard deviation of a national test (whole population) it is fair to assume a large population size, and the use of the z-score would be more appropriate, since the z-score is used for the standardization of population data, while the t-score is recommended for samples or small populations.
<span>(-21+3)*(-4)/ (27-3)
= (-18) *(-4) / 24
= 72 / 24
= 3
answer
</span><span>A.3</span>
Answer:
5/7
Step-by-step explanation
When dividing a fraction by a fraction it is the same as multiply the inverse of the bottom fraction, so 5/9 times 9/7 so the 9's cancel and your left with 5/7
Answer:
B
Step-by-step explanation:
