1. (a). Company Inc., private consumer regulator firm, claims that the standard deviation of the rating of Formula One races in the town main car racing circuit was at least 15.34.
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3. (b). An outside investigator is investigating this claim, she sampled ratings of 17 Formula One races and found them to have a standard deviation of 17.33. At alpha = 0.025, is there enough evidence to reject Company Inc.'s claim? 
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5. 1) H0: HA:
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7. 2) Decision rule
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9. 3) Calculations 
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11. 4) Decision
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13. 5) Interpretation

Answer rating: 100% (QA)

Hypothesis Testing for Standard Deviation 1 H0 HA H0 Null Hypothesis The standard deviation of the r... View the full answer