An airport official wants to prove that the proportion of delayed flights for airline a (denoted as p1) is less than the proportion of delayed flights for airline b (denoted as p2). random samples for both airlines after a storm showed that 51 out of 200 flights for airline a were delayed, while 60 out of 200 of airline b's flights were delayed. what is the standard error for this hypothesis test?

yes

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step-by-step explanation:

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

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²