đề tài tiểu luận ước lượng khoảng tin cậy cho trung bình , phương sai , tỷ lệ , cho ví dụ , bài tập áp dụng tronh lĩnh vực công nghệ , kỹ thuật

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

Can anyone me with 32,33,36,37,and 40.

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students