Answer
$H_{o}: μ = 54\ quarts $
$H_{1}: μ > 54\ quarts $
Work Step by Step
Null hypothesis (the mean consumption of popcorn by Americans is 54 quarts):
$H_{o}: μ = 54\ quarts $
Alternativel hypothesis (the mean consumption of popcorn by Americans is greater than 54 quarts):
$H_{1}: μ > 54\ quarts $