A researcher want to determine an interval estimate for the average weight of adult gorillas in pounds . She wants to be 80% certain that she is within 4.8 of the true average. From past studies, it is known that the standard deviation of the weights of adult gorillas is 16.6 pounds . What is the minimum sample size necessary to estimate the population mean?

I will tell you the answer later but mark me brainiest and I promise to answer you

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation: