Answer:
μ−2σ = 1,089.26
μ+2σ = 1,097.62
Step-by-step explanation:
The standard deviation of a sample of size 'n' and proportion 'p' is:

If n=1139 and p =0.96, the standard deviation is:

The minimum and maximum usual values are:


Hope this helps..................
320 guests / 5 servings per can = 64 cans required
Addition, I would use the principles of addition.
Answer:
Parallelogram Height = 6 cm * sine (60)
Height = 6 * 0.86603
Height = 5.19618
Parallelogram Area = Height * Side TH
Parallelogram Area = 5.19618 * 8
Parallelogram Area = 41.56944 square cm
You might find this page helpful: https://www.1728.org/quadpar.htm
Step-by-step explanation: