Seed mix a is more expensive than b
Solution: We are given the population mean 
Now, in order to find which shift's mean is closest to population mean, we will find the mean of each shift.
The mean of shift 1 is:

The mean of shift 2 is:

The mean of shift 3 is:

The mean of shift 4 is:

We clearly see the mean of shift 2 is close to the population mean. Hence the option B) Shift 2 is correct.
The statement “the value 0 is a
lower bound for the zeros of the function f(x)=-3x³+20x²-36x+16”
is TRUE. The correct answer between all the choices given is the first
choice or letter A. I am hoping that this answer has satisfied your query and
it will be able to help you in your endeavor, and if you would like, feel free
to ask another question.
Answer:
I would have helped you but I just started learning about this
It’s a circular pyramid! Hopes this helps