There are one number is X, and another number is -9/10and sum is 2/3.
B for 8 would be 6.2
b for 9 would be 7
The b is adding 0.8 each time
Hope this helps!
The correct answer is:
B: 48
Hope this helped!
Answer:




Step-by-step explanation:
Given: The above data
Solving (a): Mean of each group
Mean is calculated as:




Solving (b): The sample size of each group
This is the number of rows in each group.
Hence:

Solving (c): Standard deviation (s)
This is calculated as:

So, we have:




Solving (d): Square root of n


Solving (e): SEM
This is calculated as:



