X is greater than -5 and less than or equal to 9

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.

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

When turned about its axis of rotation, which shape could have created this three-dimensional object?