(b) Find the critical values) and identify the rejection region(s).

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(b) Find the critical values) and identify the rejection region(s).
A company wants to determine whether its consumer product ratings (0-10) have changed from last year to this year. The table below shows the company's product ratings from eight consumers for last year and this year. At a = 0.05, is there
enough evidence conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (f).
Consumer
1
2
3
4
5
6 7
8
6
5
4
5
8
5
5
Rating (last year)
Rating (this year)
3
1
4
3 6
8
3
2
EZZE
(a) Identify the claim and state Ho and H-
The claim is "The product ratings have changed
from last year to this year."
Let Hd be the hypothesized mean of the ratings last year minus the ratings this year. State Ho and H₂. Choose the correct answer below.
OA. Ho: Hozd
B. Ho: Hd 20
OC. Ho: Ha *0
H₁: Hd=0
Ha: Hd <d
Ha: Hd <0
OD. Ho: Hd SO
H:Hd>0
E. Ho: Hd=0
Ha Ha #0
OF. Ho: Hasd
Ha: Hdd
(b) Find the critical value(s) and identify the rejection region(s).
(Use a comma to separate answers as needed. Type an integer or a decimal. Round to three decimal places as needed.)
Transcribed Image Text:A company wants to determine whether its consumer product ratings (0-10) have changed from last year to this year. The table below shows the company's product ratings from eight consumers for last year and this year. At a = 0.05, is there enough evidence conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (f). Consumer 1 2 3 4 5 6 7 8 6 5 4 5 8 5 5 Rating (last year) Rating (this year) 3 1 4 3 6 8 3 2 EZZE (a) Identify the claim and state Ho and H- The claim is "The product ratings have changed from last year to this year." Let Hd be the hypothesized mean of the ratings last year minus the ratings this year. State Ho and H₂. Choose the correct answer below. OA. Ho: Hozd B. Ho: Hd 20 OC. Ho: Ha *0 H₁: Hd=0 Ha: Hd <d Ha: Hd <0 OD. Ho: Hd SO H:Hd>0 E. Ho: Hd=0 Ha Ha #0 OF. Ho: Hasd Ha: Hdd (b) Find the critical value(s) and identify the rejection region(s). (Use a comma to separate answers as needed. Type an integer or a decimal. Round to three decimal places as needed.)
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