Answer:
ok so I am also a high school student so my answer may not be correct but here are the answers.
1. 18500
2. 16000
3. 68.3%
4. 47.7%
5. 2.3%
Explanation:
To find the answers to questions 1, 2, just add 500 to mean for above and substract 500 for below. I just used a graphic calculator for 3, 4 and 5.
For a casio calculator, here are the steps
menu, 2, dist, norm, ncd,
data: variable
lower: 3. 16500, 4. 17000, 5. 0
upper: 3. 17500, 4. 18000, 5. 16000
deviation: 500
Mean: 17000
Hope this helps.