5 Step Hypothesis Test –
Correlation
Consumer Reports magazine tested
paints. The table below shows the overall quality score and cost in dollars per
gallon. Test for a correlation. Based on these results, do you get better
quality paint by paying more?
Quality
90 87 87 86 86 86 82 81 78 62 61
59 23
Cost
27 32 34 30 20 19 19 36 15 39 24
25 15
(i) Test statistic:
(ii) Critical values:
(iii) Conclusion on H0:
(iv) Interpret the results
according to the problem.
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