Mr. Novotny claims that 20% of students have at least two cell phones: one phone that works, and one broken
phone they use as a decoy for when teachers ask them
to hand in their phone because they are spending all of
their class time looking at it instead of learning. Mr.
Novotny takes a random sample of 500 students and
finds that 88 have two or more cell phones. At a = 0.05,
test Mr. Novotny's claim.
Write the appropriate set of hypothesis for the significance test.