Question

I mostly need to know if this are correct and if the answers would gave been affected.

Answer 1

Yes, your answers are correct.

And the answer would be different if the non-Normal because all the calculations are based on a normal ditributed production of the chocolate bars; if the production of the chocalte bars had a non normal distribution, for example a skewed distribution (to the left or to the right) all the values used in the calculation would be different.