Answer:
M=8
Step-by-step explanation:
We have that every score in a sample is multiplied by 5, and the mean is found to be M = 40.
We want to find the original mean.
Since each of the data value is multiplied by 5, the new mean will be 5 times the original mean.
To get the original mean, we need to divide by 5;
Therefore the original mean is [tex]\frac{40}{5}=8[/tex]
