A sample of n=8 scores has a mean of m=12. What is the value of ∑x for this sample
Answer: We are given the mean of 8 scores is 12.
We are required to find the sum of these 8 observation's, 
We know that:

We are given:




Hence, sum of 8 observation's, 
Answer:
C) d - 17 = 22
Step-by-step explanation:
selling 17 means she had 17 less than what she brought
d - 17 = 22 means: 22 is 17 less than what she brought
Wish I could help I’m not good at math
Steps to Solve:
1. 634 / 2 = 317
2. 317 + 66 = 383
Answer:
A = $383
Notes:
Read the question, this problem is not that hard to solve!
A = 35 sq ft
<span>L = 10 ft </span>
<span>W = 3.5 ft</span>