The accompanying data file contains information on matched sample observations whose differences are normally distribute

[answerhappygod]

The accompanying data file contains information on matched
sample observations whose differences are normally
distributed. (You may find it useful to reference the
appropriate
table: z table or t table)
Let the difference be defined as Sample 1 – Sample
2.
a. Construct the 95% confidence interval for
the mean
difference μD. (Negative
value should be indicated by a minus sign. Round final answers to 2
decimal places.)
confidence interval is -------to-----------
b. Specify the competing hypotheses in order to test
whether the mean difference differs from zero.

multiple choice 1
H0: μD ≥
0; HA: μD <
0
H0: μD =
0; HA: μD ≠
0
H0: μD ≤
0; HA: μD >
0
c. Using the confidence interval from part a, are you
able to reject H0?

multiple choice 2
Yes
No
d. Interpret the results at αα =
0.05.

multiple choice 3
We conclude that the mean difference differs from zero.
We cannot conclude that the mean difference differs from
zero.
We conclude that population mean 2 is greater than population
mean 1.
We cannot conclude that population mean 2 is greater than
population mean 1.