A
prime minister
is concerned about his
"negatives,"
that is, the percentage of
the country's
residents who express
disapproval
of his job performance. His political committee pays for a series of TV ads, hoping that they can keep the
negatives
below
46 %46%.
They will use follow up polling to assess the ads' effectiveness. Let p be the proportion of
the country's
residents who express
disapproval
of the
prime minister's
performance.
Upper H 0 :H0:
p
▼
less than<
greater than>
equals=
not equals≠
0.4646
Upper H Subscript Upper A Baseline :HA:
p
▼
equals=
greater than>
less than<
not equals≠
0.4646
Part 2
(b) Is
a six dash sided diea six-sided die
fair? Let p represent the probability of the
diedie
landing on any particular
sideside.
Upper H 0 :H0:
p
▼
not equals≠
greater than>
less than<
equals=
one sixth16
Upper H Subscript Upper A Baseline :HA:
p
▼
equals=
less than<
greater than>
not equals≠
one sixth16
Part 3
(c) Only about
2121%
of people who try to
stop abusing alcoholstop abusing alcohol
succeed. Sellers of a motivational tape claim that listening to the recorded messages can help people succeed. Let p be the proportion of people who try to
stop abusing alcoholstop abusing alcohol
and succeed.
Upper H 0 :H0:
p
▼
less than<
not equals≠
greater than>
equals=
0.2121
Upper H Subscript Upper A Baseline :HA:
p
▼
greater than>
equals=
less than<
not equals≠
0.2121