The state agriculture department tested 203 fuel samples across the state in 2009 for accuracy of the reported octane level. For premium grade, 14 out of 105 samples failed. Find a 99 percent confidence interval for the true population proportion of premium grade fuel-quality failures.
A) [.045, .221]
B) [.068, .198]
C) [.023, .115]
D) [.048, .219]
E) [.100, .276]
Correct Answer:
Verified
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