Answer:
7 17/99
Step-by-step explanation:
Answer:3.31
Step-by-step explanation:
0.52=Logx
Logx=0.52
x=10^(0.52)
x=3.31
There would be about 1,283,792 scores below 640.
The 87th percentile means that 87% of the scores are below 640. All we need to do is multiply the total number of scores by 0.87 and we will have the number below 640.