Answer Happy

A survey was conducted by an independent price-checking company
to check an advertiser's claim that it had lower prices than its
competitors. The average weekly total, based on the prices of
approximately 95 items, is given for this chain and for
its competitor recorded during four consecutive weeks in a
particular month.
State the test statistic. (Round your answer to three decimal
places.)
t =
State the rejection region. (If the test is one-tailed, enter
NONE for the unused region. Round your answers to three decimal
places.)
t>
t<
What is the approximate p-value for the test
conducted in part (a)?
p-value < 0.010
0.010 < p-value <
0.020
0.020 < p-value < 0.050
0.050 < p-value < 0.100
0.100 < p-value < 0.200
p-value > 0.200
(c)
Construct a 99% confidence interval for the difference in the
average prices for the two supermarket chains.
(Use 𝜇advertiser − 𝜇competitor. Round
your answers to two decimal places.)
$ to
$
Interpret this interval.
Since 0 does not fall in the confidence interval, there is
insufficient evidence to indicate that the means are different.
Since 0 falls in the confidence interval, there is insufficient
evidence to indicate that the means are
different.
Since 0 does not fall in the confidence interval, there is
sufficient evidence to indicate that the means are different.
Since 0 falls in the confidence interval, there is sufficient
evidence to indicate that the means are different.