For 30 randomly selected Rolling Stones concerts the mean gross earnings is 2:59 million dollars. Assuming a population
standard deviation gross earnings of 0.51 million dollars, obtain a 95%
confidence interval for the mean gross earnings of all Rolling Stones
concerts (in millions). Interpret this confidence interval.

two data sets with the same median will not have the same varaibility

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15