Multiple Choice
An airport traffic analyst wants to estimate the proportion of daily takeoffs by small business jets (as opposed to commercial passenger jets or other aircraft) with an error of ± 4 percent with 90 percent confidence. What sample size should the analyst use?
A) 385
B) 601
C) 410
D) 423
Correct Answer:
Verified
Correct Answer:
Verified
Q4: A 99 percent confidence interval has higher
Q5: The sample proportion is always the midpoint
Q6: The standard error of the sample proportion
Q7: In comparing estimators, the more efficient estimator
Q8: In constructing confidence intervals, it is conservative
Q10: A university wants to estimate the average
Q11: The standard deviation of the sample proportion
Q12: If σ = 25, find the sample
Q13: Sampling error can be avoided:<br>A)by using an
Q14: The width of a confidence interval for