Answer:
-1
Step-by-step explanation:
4x-1=-4
-4+3=-1
Answer:
The correct answer is (E).
This is not an experiment because no treatment is being imposed upon the customers. Additionally, this study used a stratified sample because independent random samples were selected from two distinct populations of customers.
Step-by-step explanation:
Answer:
hi
Step-by-step explanation:

i think so…
Answer:

Step-by-step explanation:
In this problem we are calculating the relative frequency conditional by columns.
Therefore the sum of the frequencies of each column must be equal to 1.
Then we use this condition to calculate the values of a and b
So:


Finally

Answer:
It would be -4 + 11 = 7. :D
Step-by-step explanation: