the Singh family buy 2 adult tickets and 3 child tickets they pay £28.20 for the tickets the Peterson family buy 3 adult tickets and 5 child tickets they pay £44.75 for the tickets find the cost of each child ticket and adult ticket

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.

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

What is the interquartile range (iqr) of the data set represented by this box plot?