What was the rate of change between 75 and 73

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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.

Two lines parallel to a third line are parallel to each other. always sometimes or never

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers