Answer:
Rectangle
Step-by-step explanation:
Answer:
Is the second one
Step-by-step explanation:
Answer:
1,440 degrees (10 interior angles of 144 degrees)
Step-by-step explanation:
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, ![\sum x](https://tex.z-dn.net/?f=%5Csum%20x)
We know that:
![\bar{x}=\frac{\sum x}{n}](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D%3D%5Cfrac%7B%5Csum%20x%7D%7Bn%7D)
We are given:
![\bar{x} = 12, n=8](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D%20%3D%2012%2C%20n%3D8)
![\therefore 12=\frac{\sum x}{8}](https://tex.z-dn.net/?f=%5Ctherefore%2012%3D%5Cfrac%7B%5Csum%20x%7D%7B8%7D)
![\sum x = 12 \times 8](https://tex.z-dn.net/?f=%5Csum%20x%20%3D%2012%20%5Ctimes%208)
![\sum x=96](https://tex.z-dn.net/?f=%5Csum%20x%3D96)
Hence, sum of 8 observation's, ![\sum x =96](https://tex.z-dn.net/?f=%5Csum%20x%20%3D96)