What is the interquartile range for this set of data?

11, 19, 35, 42, 60, 72, 80, 85, 88

B)  

55.5

Step-by-step explanation:The interquartile range is the third (upper) quartile of a data set minus the first (lower) quartile. Here, the median is 60, dividing the data set into a lower half below the median and an upper half above the median. Each of these halves contains four data values. The upper quartile is the number midway between 80 and 85, or 82.5. The lower quartile is the number midway between 19 and 35, or 27. The interquartile range is 82.5 - 27 = 55.5.

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

step-by-step explanation:

where is the questions