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A company wants to determine whether it's 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. At a=.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 c through f.
Consumer. 1. 2. 3. 4. 5. 6. 7. 8
Last year. 5. 7. 4. 4. 8. 7. 5. 6
This year. 4. 9. 6. 3. 7. 9. 4. 9
C. Calculate -d and sd.
Calculate SD
D. Find the standardized test statistic.
E. Decide whether to reject or fail to reject the null hypothesis.
F. Interpret the decision in the context of the original claim.
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