What is the least number of full cylindrical containers needed to completely fill the fish tank? Explain how you were able to come to this answer

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense

Is (root2 -2)^2 rational or irrational. show the steps and answer fast