Find the value of the underlined digit 43782 which 7 is the underlined digit

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.

Ill mark the brainliest if you me with the these three questions 7,8,9