Plasma TV’s

Consumer Reports magazine tested
large Plasma TV’s. The table below shows the rankings of TV’s by overall
quality score and cost. High values are given low ranks, so the TV with a
quality rank of 1 is the TV with the highest quality score, and a TV given a
cost rank of 1 is the most expensive. Test for a correlation. Based on these
results, can you expect to get higher quality by purchasing a more expensive
plasma TV?

Quality

1 2 3 4 5 6 7 8 9 10

Cost

2 3 6 1 10 4 9 5 8 7

(i) Test statistic Rs

(ii) Critical values:

(iii) Conclusion on H0:

(iv) Interpret the results
according to the problem.