What did you misspell something or are you foreign
Answer:
Its A and B i beleive.
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, 
We know that:

We are given:




Hence, sum of 8 observation's, 
Answer:
hello : x - 5
Step-by-step explanation:
look this solution
Step-by-step explanation:
the answer is 42 because 2 times the 21 equals 42