63/80 x 100 = 78.8%
You divide normally but multiply by 100 (moving the decimal over two places).
96.67 is the mean of these 3 numbers
Answer:
Check the explanation
Step-by-step explanation:
From the given differences of SAT scores
find the mean and standard deviation of difference.
Kindly check the attached image below to see the step by step explanation to the question above.