Answer:
The answer is below
Step-by-step explanation:
Let Y represent the profit per day, and x represent the number of bar sold per day. Hence:
Y = 0.25x - 2
a) The mean is given as:

b) The standard deviation of y is:

I have already done this question. The correct answer is c
The answer is 6/40. All the others equal 1/5.
7 34/24. Hope this helps!
It’s kinda blurry, can u retake it