Answer:
Step-by-step explanation:

The Z-score is calculated by the formula below

Step 2: Substitute the given parameters in the formula

Hence, the z-score of a person who scored 145 on the exam is -0.5
Answer:
i think the answer should be 8
Step-by-step explanation:
Answer:
Select all the expressions that equal -2 + 5.
A
-2 - (-5)
B
-2 - 5
C
5 - 2
D
5 + (-2)
Step-by-step explanation:
Answer:
-1, -1.1, 0.9, 1
Step-by-step explanation: