Concept explainers
(a)
Explain whether the station’s quoted 1.6% margin of error is correct or not.
(a)
Answer to Problem 41E
The station’s quoted 1.6% margin of error is not correct.
Explanation of Solution
Since the samples are taken voluntarily thus, the condition of randomness is violated. Thus, the confidence interval is worthless.
Hence, the station’s quoted 1.6% margin of error is not correct.
(b)
Check whether the station’s conclusion is justified or not.
(b)
Answer to Problem 41E
The conclusion based on the confidence is incorrect.
Explanation of Solution
Since the samples are taken voluntarily thus, the condition of randomness is violated. Thus, the confidence interval is worthless.
Hence, the conclusion based on the confidence is incorrect.
Chapter 8 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Introductory Statistics (2nd Edition)
Elementary Statistics: Picturing the World (6th Edition)
STATS:DATA+MODELS-W/DVD
Statistics for Psychology
Elementary Statistics: Picturing the World (7th Edition)
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