Let p equal the proportion of letters mailed in the Netherlands that are delivered the next day.
Question:
(a) Give a point estimate of p.
(b) Use Equation 7.3-2 to find an approximate 90% confidence interval for p.
(c) Use Equation 7.3-4 to find an approximate 90% confidence interval for p.
(d) Use Equation 7.3-5 to find an approximate 90% confidence interval for p.
(e) Find a one-sided 90% confidence interval for p that provides a lower bound for p.
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Related Book For
Probability and Statistical Inference
ISBN: 978-0321923271
9th edition
Authors: Robert V. Hogg, Elliot Tanis, Dale Zimmerman
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