Part 2 of 2 (b) Estimate the sample size needed if no estimate of p is available. A sample of 787T adults is needed to obtain a 99.8% confidence interval with a margin of error of 0.05.
Part 2 of 2 (b) Estimate the sample size needed if no estimate of p is available. A sample of 787T adults is needed to obtain a 99.8% confidence interval with a margin of error of 0.05.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
Related questions
Question
100%
Part 2 please
Transcribed Image Text:How's the economy? A pollster wants to construct a 99.8% confidence interval for the proportion of adults who believe that
economic conditions are getting better.
Part 1 of 2
(a) A poll taken in July 2010 estimates this proportion to be 0.29. Using this estimate, what sample size is needed so that
the confidence interval will have a margin of error of 0.05?
A sample of 787 adults is needed to obtain a 99.8% confidence interval with a margin of error of 0.05.
Part: 1/ 2
Part 2 of 2
(b) Estimate the sample size needed if no estimate of p is available.
A sample of 787T adults is needed to obtain a 99.8% confidence interval with a margin of
error of 0.05.
Save For Later
Submit Assignment
Check Answer
© 2021 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center
47°F Mostly
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
Recommended textbooks for you
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON