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Unformatted text preview: 0.05 3) Significance Level - Alpha = .05 4) Reject Rule - Reject Ho if p-bar is < 0.55 Reject Ho if p-bar is > 0.73 5) Calculations - p - bar = .52 P - value = 2*normdist ( .52,.64,.048,1) = 0.01 0.01 6) Conclusion - Reject Ho Business Answer: The sample of 100 shoppers, is strong evidence to be able conclude that the percentage of shoppers who believe supermarket ketchup was as good as the national brand is different from 64%. The test that was conducted allowed for a 5% chance of error which allowed for this conclusion to be reached. Also, the p-bar value of .52 shows that fewer shoppers believe the supermarket brand is as good as the name brand. Ha: p .64...
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- Spring '07