PLEASE HELP! Which best describes the numbers satisfying the inequality x less-than 7? all numbers greater than 7 all numbers less than 7 all numbers greater than and including 7 all numbers less than and including 7

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.

Name the most appropriate metric unit for each measurement like the mass of cow

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?