A company wants to determine whether its consumer product ratings (0- 10) have changed from last year to this vear. 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 to 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 Rating (last year) Rating (this year) 2 3 4 5 6 7 7 6 7 10 4 6 7 8 4 (Use a comma to separate answers as needed. Type an integer or a decimal. Round to three decimal places as needed.) Identify the rejection region. Choose the correct answer below. O A. t>1.895 O B. t< -1.895, t>1.895 OC. t< -2.365, t>2.365 OD. t< -2.365 (c) Calculate d and s.

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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 to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (1).
Consumer
Rating (last year)
Rating (this year)
2
3
6
7
7
5
8
7
8
7
7
6
10
6
4
to =D
(Use a comma to separate answers as needed. Type an integer or a decimal. Round to three decimal places as needed.)
Identify the rejection region. Choose the correct answer below.
O A. t>1.895
O B. t< - 1.895, t> 1.895
O C. t< - 2.365, t> 2.365
O D. t< -2.365
(c) Calculate d and s.-
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 to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (1). Consumer Rating (last year) Rating (this year) 2 3 6 7 7 5 8 7 8 7 7 6 10 6 4 to =D (Use a comma to separate answers as needed. Type an integer or a decimal. Round to three decimal places as needed.) Identify the rejection region. Choose the correct answer below. O A. t>1.895 O B. t< - 1.895, t> 1.895 O C. t< - 2.365, t> 2.365 O D. t< -2.365 (c) Calculate d and s.-
igs (0– 10) have changed from last year to this year. The table below shows the company's product ratings from eight consu
At a = 0.05, is there enough evidence to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete
Consumer
Rating (last year)
Rating (this year)
2
4
6.
7
8
6
7.
6
6
7.
10
7
6
6
4
6
8
c) Calculate d and sg.
d =
(Type an integer or a decimal.)
Calculate s.
S =
(Type an integer or a decimal. Round to three decimal places as needed.)
(d) Use the t-test to find the standardized test statistic t.
%3D
(Type an integer or a decimal. Round to three decimal places as needed.)
Transcribed Image Text:igs (0– 10) have changed from last year to this year. The table below shows the company's product ratings from eight consu At a = 0.05, is there enough evidence to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete Consumer Rating (last year) Rating (this year) 2 4 6. 7 8 6 7. 6 6 7. 10 7 6 6 4 6 8 c) Calculate d and sg. d = (Type an integer or a decimal.) Calculate s. S = (Type an integer or a decimal. Round to three decimal places as needed.) (d) Use the t-test to find the standardized test statistic t. %3D (Type an integer or a decimal. Round to three decimal places as needed.)
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